Vulnerability in OCaml opam (CVE-2026-41082)
Summary
Vulnerability in OCaml opam (CVE-2026-41082). Data can be tampered with by attackers.
Original description
The description as published by the source.
In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-41082 has been found in OCaml opam.
Data can be tampered with by attackers. CVSS score: 7.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "OCaml opam CVE-2026-41082" on the vendor's site.
CVE-2026-41082 (OCaml opam) — CWE-24 / CVSS v3 7.3
Attack vector: local / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-24) exists in OCaml opam.
Check the vendor advisory for the affected versions of OCaml opam.
Severity: High (CVSS 7.3/10). Data can be tampered with by attackers.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで OCaml opam を使っているサービスとバージョンを洗い出す。
-
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-41082 opam Fixed in: 2.0.8-1+deb11u1
- Ubuntu UBUNTU-CVE-2026-41082 opam
References
- advisory nvd.nist.gov
- advisory access.redhat.com
- advisory github.com
- patch github.com
- report bugzilla.redhat.com
- web github.com
- web osv.dev
- web lists.debian.org
- web github.com
- web security.access.redhat.com