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OpenAdvisories
Medium USN-4898-1 2 CVEs

curl vulnerabilities

Published Mar 31, 2021 · Updated Apr 22, 2026

Summary

Viktor Szakats discovered that curl did not strip off user credentials
from referrer header fields. A remote attacker could possibly use this
issue to obtain sensitive information. (CVE-2021-22876)

Mingtao Yang discovered that curl incorrectly handled session tickets when
using an HTTPS proxy. A remote attacker in control of an HTTPS proxy could
use this issue to bypass certificate checks and intercept communications.
This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10.
(CVE-2021-22890)

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS curl 7.47.0-1ubuntu2.19
Ubuntu · 18.04 LTS 18.04:LTS curl 7.58.0-2ubuntu3.13
Ubuntu · 20.04 LTS 20.04:LTS curl 7.68.0-1ubuntu2.5

Vulnerabilities 2

References

  • report
    https://ubuntu.com/security/CVE-2021-22876
  • report
    https://ubuntu.com/security/CVE-2021-22890