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CVE-2026-42285

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message. When the server receives a message with inconsistent attribute lengths, it improperly handles the internal state transition to a "withdraw" action, leading to a nil pointer dereference in the AdjRib.Update function. This causes the entire GoBGP process to cras
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8ad59eb5fef042f3f3f51570d8242ad9ab5791a1e846b9b9311843dfed60ae4d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"gobgp","vendor":"osrg","versions":[{"status":"affected","version":"= 4.4.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c70b8e9cc84824fd81f4f335e3f40a4f9fc67c4bb1eed64c454be3b7a2141d1a · sha256:d06571df62fe6962… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c70b8e9cc84824fd81f4f335e3f40a4f9fc67c4bb1eed64c454be3b7a2141d1a · sha256:d06571df62fe6962… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c70b8e9cc84824fd81f4f335e3f40a4f9fc67c4bb1eed64c454be3b7a2141d1a · sha256:d06571df62fe6962… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/osrg/gobgp/releases/tag/v4.5.0","tags":["x_refsource_MISC"],"url":"https://github.com/osrg/gobgp/releases/tag/v4.5.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c70b8e9cc84824fd81f4f335e3f40a4f9fc67c4bb1eed64c454be3b7a2141d1a · sha256:d06571df62fe6962… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c70b8e9cc84824fd81f4f335e3f40a4f9fc67c4bb1eed64c454be3b7a2141d1a · sha256:d06571df62fe6962… · /containers/adp/0/references/0
{"name":"https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c70b8e9cc84824fd81f4f335e3f40a4f9fc67c4bb1eed64c454be3b7a2141d1a · sha256:d06571df62fe6962… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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