What’s Vulnerable › Vulnerabilities
CVE-2020-11078: CRLF injection in httplib2
- Severity: medium (CVSS 6.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-05-20 · updated 2026-06-17
- Weakness: CWE-93
Description
In httplib2 before version 0.18.0, an attacker controlling unescaped part of uri for `httplib2.Http.request()` could change request headers and body, send additional hidden requests to same server. This vulnerability impacts software that uses httplib2 with uri constructed by string concatenation, as opposed to proper urllib building with escaping. This has been fixed in 0.18.0.
Affected products
- Debian Linux: 8.0
- Fedoraproject Fedora: 31, 32
- httplib2: before 0.18.0 — fixed in 0.18.0
How to fix
Upgrade to a fixed version: httplib2 0.18.0. Check the vendor advisory for mitigations.
References
- https://github.com/httplib2/httplib2/commit/a1457cc31f3206cf691d11d2bf34e98865873e9e
- https://github.com/httplib2/httplib2/security/advisories/GHSA-gg84-qgv9-w4pq
- https://lists.apache.org/thread.html/r23711190c2e98152cb6f216b95090d5eeb978543bb7e0bad22ce47fc%40%3Cissues.beam.apache.org%3E
- https://lists.apache.org/thread.html/r4d35dac106fab979f0db75a07fc4e320ad848b722103e79667ff99e1%40%3Cissues.beam.apache.org%3E
- https://lists.apache.org/thread.html/r69a462e690b5f2c3d418a288a2c98ae764d58587bd0b5d6ab141f25f%40%3Cissues.beam.apache.org%3E
- https://lists.apache.org/thread.html/r7f364000066748299b331b615ba51c62f55ab5b201ddce9a22d98202%40%3Cissues.beam.apache.org%3E
- https://lists.apache.org/thread.html/rad8872fc99f670958c2774e2bf84ee32a3a0562a0c787465cf3dfa23%40%3Cissues.beam.apache.org%3E
- https://lists.apache.org/thread.html/rc9eff9572946142b657c900fe63ea4bbd3535911e8d4ce4d08fe4b89%40%3Ccommits.allura.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/06/msg00000.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IXCX2AWROGWGY5GXR7VN3BKF34A2FO6J/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZJ3D6JSM7CFZESZZKGUW2VX55BOSOXI/
- https://github.com/httplib2/httplib2/commit/a1457cc31f3206cf691d11d2bf34e98865873e9e
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