| Name | CVE-2026-48840 |
| Description | PROXY-protocol uninitialised-stack information disclosure |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6309-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| exim4 (PTS) | bullseye | 4.94.2-7+deb11u3 | vulnerable |
| bullseye (security) | 4.94.2-7+deb11u5 | vulnerable |
| bookworm | 4.96-15+deb12u9 | vulnerable |
| bookworm (security) | 4.96-15+deb12u10 | fixed |
| trixie | 4.98.2-1+deb13u2 | vulnerable |
| trixie (security) | 4.98.2-1+deb13u3 | fixed |
| forky, sid | 4.99.3-1 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
https://www.openwall.com/lists/oss-security/2026/05/29/3
https://www.exim.org/static/doc/security/EXIM-Security-2026-05-19.1/EXIM-Security-2026-05-19.1.txt
Fixed by: https://code.exim.org/exim/exim/commit/aae0c4c3fba1f7e50971ba250ddbbedb583d48a6 (exim-4.99.4)