CVE-2026-34518
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
AIOHTTP leaks Cookie and Proxy-Authorization headers on cross-origin redirect
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-34518
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-34518.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 3.13.5-1 |
| debian | sid | fixed | 3.13.5-1 |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | aiohttp | <3.13.4 | 3.13.4 |
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-966j-vmvw-g2g9
- https://nvd.nist.gov/vuln/detail/CVE-2026-34518
- https://github.com/aio-libs/aiohttp/commit/5351c980dcec7ad385730efdf4e1f4338b24fdb6
- https://github.com/aio-libs/aiohttp
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
- https://www.suse.com/security/cve/CVE-2026-34518.html
- https://security-tracker.debian.org/tracker/CVE-2026-34518
Verify integrity in audit chain (admin only). AS-IS.