# CVE-2021-22876: curl: The curl packages provide the libcurl library and the curl utility for downloading files from servers using various p... CVE-2021-22876 is fixed in 7 products on 1 platform, first by curl 7.58.0-2ubuntu3.13, released March 30, 2021. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2021-22876 - Priority: Routine - CVSS: 5.3 (Moderate) - EPSS: 0.0530 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 30, 2021 ## Description The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. Security Fix(es): * curl: Leak of authentication credentials in URL via automatic Referer (CVE-2021-22876) * curl: TELNET stack contents disclosure (CVE-2021-22898) * curl: Incorrect fix for CVE-2021-22898 TELNET stack contents disclosure (CVE-2021-22925) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | curl RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 | | Linux | curl Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.13 | [curl 7.58.0-2ubuntu3.13](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-curl-7.58.0-2ubuntu3.13.md) | Mar 30, 2021 | | Linux | curl Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.5 | [curl 7.68.0-1ubuntu2.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-curl-7.68.0-1ubuntu2.5.md) | Mar 30, 2021 | | Linux | curl almalinux 8 | 7.61.1-22.el8 | [ALSA-2021:4511](https://patchblox.com/security/data/fix/linux/alsa-2021-4511.md) | Nov 9, 2021 | | Linux | curl ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 | | Linux | curl rocky 8 | 0:7.61.1-22.el8 | [RLSA-2021:4511](https://patchblox.com/security/data/fix/linux/rlsa-2021-4511.md) | Nov 9, 2021 | | Linux | libcurl RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 | | Linux | libcurl almalinux 8 | 7.61.1-22.el8 | [ALSA-2021:4511](https://patchblox.com/security/data/fix/linux/alsa-2021-4511.md) | Nov 9, 2021 | | Linux | libcurl ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 | | Linux | libcurl-devel RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 | | Linux | libcurl-devel almalinux 8 | 7.61.1-22.el8 | [ALSA-2021:4511](https://patchblox.com/security/data/fix/linux/alsa-2021-4511.md) | Nov 9, 2021 | | Linux | libcurl-devel ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 | | Linux | libcurl-minimal RHEL 8 | 0:7.61.1-22.el8 | [RHSA-2021:4511](https://patchblox.com/security/data/fix/linux/rhsa-2021-4511.md) | Nov 9, 2021 | | Linux | libcurl-minimal almalinux 8 | 7.61.1-22.el8 | [ALSA-2021:4511](https://patchblox.com/security/data/fix/linux/alsa-2021-4511.md) | Nov 9, 2021 | | Linux | libcurl-minimal ol 8 | 0:7.61.1-22.el8 | [ELSA-2021-4511](https://patchblox.com/security/data/fix/linux/elsa-2021-4511.md) | Nov 16, 2021 | | Linux | libcurl3-gnutls Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.13 | [libcurl3-gnutls 7.58.0-2ubuntu3.13](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-gnutls-7.58.0-2ubuntu3.13.md) | Mar 30, 2021 | | Linux | libcurl3-gnutls Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.5 | [libcurl3-gnutls 7.68.0-1ubuntu2.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-gnutls-7.68.0-1ubuntu2.5.md) | Mar 30, 2021 | | Linux | libcurl3-nss Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.13 | [libcurl3-nss 7.58.0-2ubuntu3.13](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl3-nss-7.58.0-2ubuntu3.13.md) | Mar 30, 2021 | | Linux | libcurl3-nss Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.5 | [libcurl3-nss 7.68.0-1ubuntu2.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl3-nss-7.68.0-1ubuntu2.5.md) | Mar 30, 2021 | | Linux | libcurl4 Ubuntu 18.04.6 LTS (bionic) | 7.58.0-2ubuntu3.13 | [libcurl4 7.58.0-2ubuntu3.13](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcurl4-7.58.0-2ubuntu3.13.md) | Mar 30, 2021 | | Linux | libcurl4 Ubuntu 20.04 LTS (focal) | 7.68.0-1ubuntu2.5 | [libcurl4 7.68.0-1ubuntu2.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcurl4-7.68.0-1ubuntu2.5.md) | Mar 30, 2021 | --- Data as of 2026-11-08T13:06:02Z UTC. 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