CVE-2025-58186

NameCVE-2025-58186
DescriptionDespite HTTP headers having a default limit of 1MB, the number of cookies that can be parsed does not have a limit. By sending a lot of very small cookies such as "a=;", an attacker can make an HTTP server allocate a large amount of structs, causing large memory consumption.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
golang-1.15 (PTS)bullseye1.15.15-1~deb11u4vulnerable
golang-1.19 (PTS)bookworm1.19.8-2vulnerable
golang-1.24 (PTS)trixie1.24.4-1vulnerable
forky, sid1.24.9-1fixed
golang-1.25 (PTS)forky, sid1.25.3-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
golang-1.15source(unstable)(unfixed)
golang-1.19source(unstable)(unfixed)
golang-1.23source(unstable)(unfixed)
golang-1.24source(unstable)1.24.8-1
golang-1.25source(unstable)1.25.2-1

Notes

[trixie] - golang-1.24 <no-dsa> (Minor issue)
[bookworm] - golang-1.19 <no-dsa> (Minor issue)
https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI/m/qZN5nc-mBgAJ
https://github.com/golang/go/issues/75672
https://github.com/golang/go/commit/100c5a66802b5a895b1d0e5ed3b7918f899c4833 (go1.25.2)
https://github.com/golang/go/commit/c6b04dd33b0215f5deb83724661921842bf67607 (go1.24.8)

Search for package or bug name: Reporting problems