DEBIAN-CVE-2026-49837
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-49837
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-49837.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-49837
- Upstream
- Published
- 2026-09-10T22:16:57Z
- Modified
- 2026-09-17T08:47:26Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Versions prior to 4.6.0 contain a BGP OPEN capability parsing issue where several concrete capability decoders may parse data from the full remaining capability buffer instead of the slice bounded by the declared capability length,
CapLen. A malformed BGP OPEN message can cause bytes from a following capability to be interpreted as part of the current capability. The most security-relevant case is the 4-octet AS capability, where a capability withCapLen == 0may cause the parser to read bytes from the following capability as the 4-octet AS value. This parsed value may later affect peer AS validation during BGP session establishment. Version 4.6.0 patches the issue. - References
Affected packages
Debian:12 / gobgp
Package
- Name
- gobgp
- Purl
- pkg:deb/debian/gobgp?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / gobgp
Package
- Name
- gobgp
- Purl
- pkg:deb/debian/gobgp?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / gobgp
Package
- Name
- gobgp
- Purl
- pkg:deb/debian/gobgp?arch=source&distro=forky