CVE-2026-1502
HTTP client proxy tunnel headers not validated for CR/LF
EPSS 0.56%
Description
CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.
How to fix CVE-2026-1502
To remediate CVE-2026-1502, upgrade the affected package to a fixed version below.
- Debian/pypy3—no fix listed
- Debian/python2.7—no fix listed
- Debian/python3.11—no fix listed
- Debian/python3.13—upgrade to 3.13.5-2+deb13u3 or later
- Debian/python3.14—upgrade to 3.14.5-1 or later
- —no fix listed
Is CVE-2026-1502 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (6)
- from 0
- from 0
- from 0
- from 0, < 3.13.5-2+deb13u3
- from 0, < 3.14.5-1
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |