# CVE-2023-28322: curl: An information disclosure vulnerability exists in curl <v8.1.0 when doingHTTP(S) transfers, libcurl might erroneously...

CVE-2023-28322 is fixed in 15 products on 1 platform, first by curl 7.58.0-2ubuntu3.24+esm1, released May 16, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-28322
- Priority: Routine
- CVSS: 3.7 (Low)
- EPSS: 0.0221
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 16, 2023

## Description

An information disclosure vulnerability exists in curl <v8.1.0 when doingHTTP(S) transfers, libcurl might erroneously use the read callback(`CURLOPT_READFUNCTION`) to ask for data to send, even when the`CURLOPT_POSTFIELDS` option has been set, if the same handle previouslywasused to issue a `PUT` request which used that callback. This flaw maysurprise the application and cause it to misbehave and either send off thewrong data or use memory after free or similar in the second transfer. Theproblem exists in the logic for a reused handle when it is (expected to be)changed from a PUT to a POST.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | curl Debian 12.15 (bookworm) | 7.88.1-10 | [DEBIAN-CVE-2023-28322](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28322.md) | May 26, 2023 |
| Linux | curl Debian 13.5 (trixie) | 7.88.1-10 | [DEBIAN-CVE-2023-28322](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28322.md) | May 26, 2023 |
| Linux | curl Debian 14 | 7.88.1-10 | [DEBIAN-CVE-2023-28322](https://patchblox.com/security/data/fix/linux/debian-cve-2023-28322.md) | May 26, 2023 |
| Linux | curl RHEL 8 | 0:7.61.1-33.el8_9.5 | [RHSA-2024:1601](https://patchblox.com/security/data/fix/linux/rhsa-2024-1601.md) | Apr 2, 2024 |
| Linux | curl RHEL 9 | 0:7.76.1-23.el9_2.2 | [RHSA-2023:4354](https://patchblox.com/security/data/fix/linux/rhsa-2023-4354.md) | Aug 1, 2023 |
| Linux | curl Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm1 | [curl 7.58.0-2ubuntu3.24+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-curl-7.58.0-2ubuntu3.24-esm1.md) | May 16, 2023 |
| Linux | curl Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.19 | [curl 7.68.0-1ubuntu2.19](https://patchblox.com/security/data/fix/linux/ubuntu-focal-curl-7.68.0-1ubuntu2.19.md) | May 16, 2023 |
| Linux | curl Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.11 | [curl 7.81.0-1ubuntu1.11](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-curl-7.81.0-1ubuntu1.11.md) | May 16, 2023 |
| Linux | curl Ubuntu 24.10 (oracular) | 7.88.1-10ubuntu1 | [curl 7.88.1-10ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-curl-7.88.1-10ubuntu1.md) | Jan 16, 2026 |
| Linux | curl Ubuntu 25.04 (plucky) | 7.88.1-10ubuntu1 | [curl 7.88.1-10ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-curl-7.88.1-10ubuntu1.md) | Jan 16, 2026 |
| Linux | curl almalinux 8 | 7.61.1-33.el8_9.5 | [ALSA-2024:1601](https://patchblox.com/security/data/fix/linux/alsa-2024-1601.md) | Apr 2, 2024 |
| Linux | curl almalinux 9 | 7.76.1-23.el9_2.2 | [ALSA-2023:4354](https://patchblox.com/security/data/fix/linux/alsa-2023-4354.md) | Aug 1, 2023 |
| Linux | curl amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | curl ol 8 | 0:7.61.1-33.el8_9.5 | [ELSA-2024-1601](https://patchblox.com/security/data/fix/linux/elsa-2024-1601.md) | Apr 3, 2024 |
| Linux | curl ol 9 | 0:7.76.1-23.el9_2.2 | [ELSA-2023-4354](https://patchblox.com/security/data/fix/linux/elsa-2023-4354.md) | Aug 2, 2023 |
| Linux | curl rocky 8 | 0:7.61.1-33.el8_9.5 | [RLSA-2024:1601](https://patchblox.com/security/data/fix/linux/rlsa-2024-1601.md) | Apr 5, 2024 |
| Linux | curl-debuginfo amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | curl-debugsource amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | curl-minimal RHEL 9 | 0:7.76.1-23.el9_2.2 | [RHSA-2023:4354](https://patchblox.com/security/data/fix/linux/rhsa-2023-4354.md) | Aug 1, 2023 |
| Linux | curl-minimal almalinux 9 | 7.76.1-23.el9_2.2 | [ALSA-2023:4354](https://patchblox.com/security/data/fix/linux/alsa-2023-4354.md) | Aug 1, 2023 |
| Linux | curl-minimal amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | curl-minimal ol 9 | 0:7.76.1-23.el9_2.2 | [ELSA-2023-4354](https://patchblox.com/security/data/fix/linux/elsa-2023-4354.md) | Aug 2, 2023 |
| Linux | curl-minimal-debuginfo amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | libcurl RHEL 8 | 0:7.61.1-33.el8_9.5 | [RHSA-2024:1601](https://patchblox.com/security/data/fix/linux/rhsa-2024-1601.md) | Apr 2, 2024 |
| Linux | libcurl RHEL 9 | 0:7.76.1-23.el9_2.2 | [RHSA-2023:4354](https://patchblox.com/security/data/fix/linux/rhsa-2023-4354.md) | Aug 1, 2023 |
| Linux | libcurl almalinux 8 | 7.61.1-33.el8_9.5 | [ALSA-2024:1601](https://patchblox.com/security/data/fix/linux/alsa-2024-1601.md) | Apr 2, 2024 |
| Linux | libcurl almalinux 9 | 7.76.1-23.el9_2.2 | [ALSA-2023:4354](https://patchblox.com/security/data/fix/linux/alsa-2023-4354.md) | Aug 1, 2023 |
| Linux | libcurl amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | libcurl ol 8 | 0:7.61.1-33.el8_9.5 | [ELSA-2024-1601](https://patchblox.com/security/data/fix/linux/elsa-2024-1601.md) | Apr 3, 2024 |
| Linux | libcurl ol 9 | 0:7.76.1-23.el9_2.2 | [ELSA-2023-4354](https://patchblox.com/security/data/fix/linux/elsa-2023-4354.md) | Aug 2, 2023 |
| Linux | libcurl-debuginfo amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | libcurl-devel RHEL 8 | 0:7.61.1-33.el8_9.5 | [RHSA-2024:1601](https://patchblox.com/security/data/fix/linux/rhsa-2024-1601.md) | Apr 2, 2024 |
| Linux | libcurl-devel RHEL 9 | 0:7.76.1-23.el9_2.2 | [RHSA-2023:4354](https://patchblox.com/security/data/fix/linux/rhsa-2023-4354.md) | Aug 1, 2023 |
| Linux | libcurl-devel almalinux 8 | 7.61.1-33.el8_9.5 | [ALSA-2024:1601](https://patchblox.com/security/data/fix/linux/alsa-2024-1601.md) | Apr 2, 2024 |
| Linux | libcurl-devel almalinux 9 | 7.76.1-23.el9_2.2 | [ALSA-2023:4354](https://patchblox.com/security/data/fix/linux/alsa-2023-4354.md) | Aug 1, 2023 |
| Linux | libcurl-devel amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | libcurl-devel ol 8 | 0:7.61.1-33.el8_9.5 | [ELSA-2024-1601](https://patchblox.com/security/data/fix/linux/elsa-2024-1601.md) | Apr 3, 2024 |
| Linux | libcurl-devel ol 9 | 0:7.76.1-23.el9_2.2 | [ELSA-2023-4354](https://patchblox.com/security/data/fix/linux/elsa-2023-4354.md) | Aug 2, 2023 |
| Linux | libcurl-minimal RHEL 8 | 0:7.61.1-33.el8_9.5 | [RHSA-2024:1601](https://patchblox.com/security/data/fix/linux/rhsa-2024-1601.md) | Apr 2, 2024 |
| Linux | libcurl-minimal RHEL 9 | 0:7.76.1-23.el9_2.2 | [RHSA-2023:4354](https://patchblox.com/security/data/fix/linux/rhsa-2023-4354.md) | Aug 1, 2023 |
| Linux | libcurl-minimal almalinux 8 | 7.61.1-33.el8_9.5 | [ALSA-2024:1601](https://patchblox.com/security/data/fix/linux/alsa-2024-1601.md) | Apr 2, 2024 |
| Linux | libcurl-minimal almalinux 9 | 7.76.1-23.el9_2.2 | [ALSA-2023:4354](https://patchblox.com/security/data/fix/linux/alsa-2023-4354.md) | Aug 1, 2023 |
| Linux | libcurl-minimal amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | libcurl-minimal ol 8 | 0:7.61.1-33.el8_9.5 | [ELSA-2024-1601](https://patchblox.com/security/data/fix/linux/elsa-2024-1601.md) | Apr 3, 2024 |
| Linux | libcurl-minimal ol 9 | 0:7.76.1-23.el9_2.2 | [ELSA-2023-4354](https://patchblox.com/security/data/fix/linux/elsa-2023-4354.md) | Aug 2, 2023 |
| Linux | libcurl-minimal-debuginfo amzn 2023 | 8.0.1-1.amzn2023.0.1 | [ALAS2023-2023-270](https://patchblox.com/security/data/fix/linux/alas2023-2023-270.md) | Jul 19, 2023 |
| Linux | libcurl3-gnutls Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm1 | [libcurl3-gnutls 7.58.0-2ubuntu3.24+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-gnutls-7.58.0-2ubuntu3.24-esm1.md) | May 16, 2023 |
| Linux | libcurl3-gnutls Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.19 | [libcurl3-gnutls 7.68.0-1ubuntu2.19](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-gnutls-7.68.0-1ubuntu2.19.md) | May 16, 2023 |
| Linux | libcurl3-gnutls Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.11 | [libcurl3-gnutls 7.81.0-1ubuntu1.11](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl3-gnutls-7.81.0-1ubuntu1.11.md) | May 16, 2023 |
| Linux | libcurl3-nss Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm1 | [libcurl3-nss 7.58.0-2ubuntu3.24+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-nss-7.58.0-2ubuntu3.24-esm1.md) | May 16, 2023 |
| Linux | libcurl3-nss Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.19 | [libcurl3-nss 7.68.0-1ubuntu2.19](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-nss-7.68.0-1ubuntu2.19.md) | May 16, 2023 |
| Linux | libcurl3-nss Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.11 | [libcurl3-nss 7.81.0-1ubuntu1.11](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl3-nss-7.81.0-1ubuntu1.11.md) | May 16, 2023 |
| Linux | libcurl3t64-gnutls Ubuntu 24.10 (oracular) | 7.88.1-10ubuntu1 | [libcurl3t64-gnutls 7.88.1-10ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcurl3t64-gnutls-7.88.1-10ubuntu1.md) | Jan 16, 2026 |
| Linux | libcurl3t64-gnutls Ubuntu 25.04 (plucky) | 7.88.1-10ubuntu1 | [libcurl3t64-gnutls 7.88.1-10ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcurl3t64-gnutls-7.88.1-10ubuntu1.md) | Jan 16, 2026 |
| Linux | libcurl4 Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.24+esm1 | [libcurl4 7.58.0-2ubuntu3.24+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl4-7.58.0-2ubuntu3.24-esm1.md) | May 16, 2023 |
| Linux | libcurl4 Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.19 | [libcurl4 7.68.0-1ubuntu2.19](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl4-7.68.0-1ubuntu2.19.md) | May 16, 2023 |
| Linux | libcurl4 Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.11 | [libcurl4 7.81.0-1ubuntu1.11](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcurl4-7.81.0-1ubuntu1.11.md) | May 16, 2023 |
| Linux | libcurl4t64 Ubuntu 24.10 (oracular) | 7.88.1-10ubuntu1 | [libcurl4t64 7.88.1-10ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcurl4t64-7.88.1-10ubuntu1.md) | Jan 16, 2026 |
| Linux | libcurl4t64 Ubuntu 25.04 (plucky) | 7.88.1-10ubuntu1 | [libcurl4t64 7.88.1-10ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcurl4t64-7.88.1-10ubuntu1.md) | Jan 16, 2026 |

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