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GoBGP: BGP OPEN capability parser may read capability values outside declared CapLen boundaries

🗓️ 09 Jul 2026 23:20:57Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 42 Views

GoBGP BGP OPEN capability parsing may read beyond CapLen, causing misparsing of four octet AS numbers.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC
BGP OPEN Message Parser GoBGP Data Compromise
11 Sep 202600:00
–bdu_fstec
circl
Circl
CVE-2026-49837
10 Jul 202600:35
–circl
cve
CVE
CVE-2026-49837
10 Sep 202621:56
–cve
cvelist
Cvelist
CVE-2026-49837 GoBGP: BGP OPEN capability parser may read capability values outside declared CapLen boundaries
10 Sep 202621:56
–cvelist
debiancve
Debian CVE
CVE-2026-49837
10 Sep 202621:56
–debiancve
euvd
EUVD
EUVD-2026-75806
10 Sep 202621:56
–euvd
mend
Mend
CVE-2026-49837
10 Sep 202621:56
–mend
nvd
NVD
CVE-2026-49837
10 Sep 202622:16
–nvd
osv_cve
osv_cve
CVE-2026-49837 GoBGP: BGP OPEN capability parser may read capability values outside declared CapLen boundaries
10 Sep 202621:56
–osv_cve
osv_debian
osv_debian
DEBIAN-CVE-2026-49837
10 Sep 202622:16
–osv_debian
Rows per page
Vulners
Node
osrggobgpRange≤4.5.0go

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09 Jul 2026 23:20Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.15.9
EPSS0.00332
SSVC
42