# CVE-2026-1539: gir1.2-soup-2.4: A flaw was found in the libsoup HTTP library that can cause proxy authentication credentials to be sent to unintended...

CVE-2026-1539 is fixed in 18 products on 1 platform, first by gir1.2-soup-3.0 3.0.7-0ubuntu1+esm7, released January 28, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-1539
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 28, 2026

## Description

A flaw was found in the libsoup HTTP library that can cause proxy authentication credentials to be sent to unintended destinations. When handling HTTP redirects, libsoup removes the Authorization header but does not remove the Proxy-Authorization header if the request is redirected to a different host. As a result, sensitive proxy credentials may be leaked to third-party servers. Applications using libsoup for HTTP communication may unintentionally expose proxy authentication data.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gir1.2-soup-2.4 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm8 | [gir1.2-soup-2.4 2.62.1-1ubuntu0.4+esm8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gir1.2-soup-2.4-2.62.1-1ubuntu0.4-esm8.md) | Feb 3, 2026 |
| Linux | gir1.2-soup-2.4 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm3 | [gir1.2-soup-2.4 2.70.0-1ubuntu0.5+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gir1.2-soup-2.4-2.70.0-1ubuntu0.5-esm3.md) | Feb 3, 2026 |
| Linux | gir1.2-soup-2.4 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.8 | [gir1.2-soup-2.4 2.74.2-3ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-soup-2.4-2.74.2-3ubuntu0.8.md) | Feb 3, 2026 |
| Linux | gir1.2-soup-2.4 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.8 | [gir1.2-soup-2.4 2.74.3-6ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-soup-2.4-2.74.3-6ubuntu1.8.md) | Feb 3, 2026 |
| Linux | gir1.2-soup-2.4 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm2 | [gir1.2-soup-2.4 2.74.3-10.1ubuntu5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-soup-2.4-2.74.3-10.1ubuntu5-esm2.md) | Feb 3, 2026 |
| Linux | gir1.2-soup-3.0 Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm7 | [gir1.2-soup-3.0 3.0.7-0ubuntu1+esm7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gir1.2-soup-3.0-3.0.7-0ubuntu1-esm7.md) | Jan 28, 2026 |
| Linux | gir1.2-soup-3.0 Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.7 | [gir1.2-soup-3.0 3.4.4-5ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gir1.2-soup-3.0-3.4.4-5ubuntu0.7.md) | Jan 28, 2026 |
| Linux | gir1.2-soup-3.0 Ubuntu 25.10 (questing) | 3.6.5-4ubuntu0.2 | [gir1.2-soup-3.0 3.6.5-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gir1.2-soup-3.0-3.6.5-4ubuntu0.2.md) | Jan 28, 2026 |
| Linux | libsoup opensuse-leap 15.6 | 3.4.4-150600.3.37.1 | [SUSE-SU-2026:0788-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0788-1.md) | Mar 3, 2026 |
| Linux | libsoup opensuse-leap 16.0 | 3.6.6-160000.1.1 | [OPENSUSE-SU-2026:20384-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20384-1.md) | Mar 18, 2026 |
| Linux | libsoup sles 15.6 | 3.4.4-150600.3.37.1 | [SUSE-SU-2026:0788-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0788-1.md) | Mar 3, 2026 |
| Linux | libsoup sles 15.7 | 3.4.4-150600.3.37.1 | [SUSE-SU-2026:0788-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0788-1.md) | Mar 3, 2026 |
| Linux | libsoup sles 16.0 | 3.6.6-160000.1.1 | [SUSE-SU-2026:20902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20902-1.md) | Mar 18, 2026 |
| Linux | libsoup-2.4-1 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.8 | [libsoup-2.4-1 2.74.3-6ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-2.4-1-2.74.3-6ubuntu1.8.md) | Feb 3, 2026 |
| Linux | libsoup-2.4-1 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm2 | [libsoup-2.4-1 2.74.3-10.1ubuntu5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup-2.4-1-2.74.3-10.1ubuntu5-esm2.md) | Feb 3, 2026 |
| Linux | libsoup-3.0-0 Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm7 | [libsoup-3.0-0 3.0.7-0ubuntu1+esm7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-3.0-0-3.0.7-0ubuntu1-esm7.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-0 Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.7 | [libsoup-3.0-0 3.4.4-5ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-3.0-0-3.4.4-5ubuntu0.7.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-0 Ubuntu 25.10 (questing) | 3.6.5-4ubuntu0.2 | [libsoup-3.0-0 3.6.5-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-3.0-0-3.6.5-4ubuntu0.2.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-common Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm7 | [libsoup-3.0-common 3.0.7-0ubuntu1+esm7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-3.0-common-3.0.7-0ubuntu1-esm7.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-common Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.7 | [libsoup-3.0-common 3.4.4-5ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-3.0-common-3.4.4-5ubuntu0.7.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-common Ubuntu 25.10 (questing) | 3.6.5-4ubuntu0.2 | [libsoup-3.0-common 3.6.5-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-3.0-common-3.6.5-4ubuntu0.2.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-tests Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm7 | [libsoup-3.0-tests 3.0.7-0ubuntu1+esm7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-3.0-tests-3.0.7-0ubuntu1-esm7.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-tests Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.7 | [libsoup-3.0-tests 3.4.4-5ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-3.0-tests-3.4.4-5ubuntu0.7.md) | Jan 28, 2026 |
| Linux | libsoup-3.0-tests Ubuntu 25.10 (questing) | 3.6.5-4ubuntu0.2 | [libsoup-3.0-tests 3.6.5-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libsoup-3.0-tests-3.6.5-4ubuntu0.2.md) | Jan 28, 2026 |
| Linux | libsoup-gnome-2.4-1 Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.8 | [libsoup-gnome-2.4-1 2.74.3-6ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup-gnome-2.4-1-2.74.3-6ubuntu1.8.md) | Feb 3, 2026 |
| Linux | libsoup-gnome-2.4-1 Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm2 | [libsoup-gnome-2.4-1 2.74.3-10.1ubuntu5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup-gnome-2.4-1-2.74.3-10.1ubuntu5-esm2.md) | Feb 3, 2026 |
| Linux | libsoup-gnome2.4-1 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm8 | [libsoup-gnome2.4-1 2.62.1-1ubuntu0.4+esm8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsoup-gnome2.4-1-2.62.1-1ubuntu0.4-esm8.md) | Feb 3, 2026 |
| Linux | libsoup-gnome2.4-1 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm3 | [libsoup-gnome2.4-1 2.70.0-1ubuntu0.5+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup-gnome2.4-1-2.70.0-1ubuntu0.5-esm3.md) | Feb 3, 2026 |
| Linux | libsoup-gnome2.4-1 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.8 | [libsoup-gnome2.4-1 2.74.2-3ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup-gnome2.4-1-2.74.2-3ubuntu0.8.md) | Feb 3, 2026 |
| Linux | libsoup2 opensuse-leap 15.6 | 2.74.3-150600.4.30.1 | [SUSE-SU-2026:0811-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0811-1.md) | Mar 5, 2026 |
| Linux | libsoup2 opensuse-leap 16.0 | 2.74.3-160000.4.1 | [OPENSUSE-SU-2026:20354-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20354-1.md) | Mar 13, 2026 |
| Linux | libsoup2 sles 15.6 | 2.74.3-150600.4.30.1 | [SUSE-SU-2026:0811-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0811-1.md) | Mar 5, 2026 |
| Linux | libsoup2 sles 15.7 | 2.74.3-150600.4.30.1 | [SUSE-SU-2026:0811-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0811-1.md) | Mar 5, 2026 |
| Linux | libsoup2.4-1 Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm8 | [libsoup2.4-1 2.62.1-1ubuntu0.4+esm8](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libsoup2.4-1-2.62.1-1ubuntu0.4-esm8.md) | Feb 3, 2026 |
| Linux | libsoup2.4-1 Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm3 | [libsoup2.4-1 2.70.0-1ubuntu0.5+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup2.4-1-2.70.0-1ubuntu0.5-esm3.md) | Feb 3, 2026 |
| Linux | libsoup2.4-1 Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.8 | [libsoup2.4-1 2.74.2-3ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-1-2.74.2-3ubuntu0.8.md) | Feb 3, 2026 |
| Linux | libsoup2.4-common Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.8 | [libsoup2.4-common 2.74.2-3ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-common-2.74.2-3ubuntu0.8.md) | Feb 3, 2026 |
| Linux | libsoup2.4-common Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.8 | [libsoup2.4-common 2.74.3-6ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup2.4-common-2.74.3-6ubuntu1.8.md) | Feb 3, 2026 |
| Linux | libsoup2.4-common Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm2 | [libsoup2.4-common 2.74.3-10.1ubuntu5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup2.4-common-2.74.3-10.1ubuntu5-esm2.md) | Feb 3, 2026 |
| Linux | libsoup2.4-tests Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm3 | [libsoup2.4-tests 2.70.0-1ubuntu0.5+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libsoup2.4-tests-2.70.0-1ubuntu0.5-esm3.md) | Feb 3, 2026 |
| Linux | libsoup2.4-tests Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.8 | [libsoup2.4-tests 2.74.2-3ubuntu0.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libsoup2.4-tests-2.74.2-3ubuntu0.8.md) | Feb 3, 2026 |
| Linux | libsoup2.4-tests Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.8 | [libsoup2.4-tests 2.74.3-6ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libsoup2.4-tests-2.74.3-6ubuntu1.8.md) | Feb 3, 2026 |
| Linux | libsoup2.4-tests Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm2 | [libsoup2.4-tests 2.74.3-10.1ubuntu5+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libsoup2.4-tests-2.74.3-10.1ubuntu5-esm2.md) | Feb 3, 2026 |
| Linux | libsoup3 amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 |
| Linux | libsoup3-debuginfo amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 |
| Linux | libsoup3-debugsource amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 |
| Linux | libsoup3-devel amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 |
| Linux | libsoup3-doc amzn 2023 | 3.6.5-56.amzn2023 | [ALAS2023-2026-1460](https://patchblox.com/security/data/fix/linux/alas2023-2026-1460.md) | Mar 2, 2026 |

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