CVE-2026-41082

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 89% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Elevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

April 16, 2026

Last Modified

July 15, 2026

Advisory Details (3)

Auto-updated Jun 14, 2026
Patch available. Sources: github_pr, github_release.
generic Patch Available

[SECURITY] [DLA 4541-1] opam security update

https://lists.debian.org/debian-lts-announce/2026/04/msg00021.html
github_release Patch Available

2.5.1

Patch available: ocaml/opam 2.5.1

https://github.com/ocaml/opam/releases/tag/2.5.1
github_pr

Invalidate .install fields containing destination filepath trying to escape their scope

Fix merged in ocaml/opam PR #6897 on 2026-04-15 — awaiting tagged release

https://github.com/ocaml/opam/pull/6897

Vendor Advisories for CVE-2026-41082(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopam-installer (2.1.5-1ubuntu0.1~esm2) @ noble2026-06-14ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
opam2.0.8-12.0.8-1+deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
opam2.1.2-12.1.2-1+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
opam2.3.0-12.3.0-1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
opam2.3.0-1, 2.4.1-1, 2.5.0-12.5.1-1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 209 total refreshes for this CVE.

  1. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-12 15:01 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-10 09:34 UTCEPSS rescore
  7. 2026-09-08 22:00 UTCEPSS rescore
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:12 UTCEPSS rescore
  12. 2026-09-02 04:58 UTCOSV refresh
  13. 2026-09-01 13:53 UTCEPSS rescore
  14. 2026-09-01 04:39 UTCEPSS rescore
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 14:46 UTCEPSS rescore
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-20 22:55 UTCEPSS rescore
  23. 2026-08-19 17:03 UTCEPSS rescore
  24. 2026-08-18 13:48 UTCEPSS rescore
  25. 2026-08-17 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 06:34 UTCEG score recompute
  3. 2026-08-16 06:34 UTCVendor advisory
  4. 2026-08-16 06:34 UTCGHSA enrichment
  5. 2026-08-16 02:14 UTCEPSS rescore
  6. 2026-08-15 01:30 UTCEPSS rescore
  7. 2026-08-14 18:08 UTCVendor advisory
  8. 2026-08-14 18:08 UTCGHSA enrichment
  9. 2026-08-14 04:40 UTCEG score recompute
  10. 2026-08-14 04:40 UTCVendor advisory
  11. 2026-08-14 04:40 UTCGHSA enrichment
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-13 08:54 UTCVendor advisory
  14. 2026-08-13 08:54 UTCGHSA enrichment
  15. 2026-08-12 18:50 UTCEG score recompute
  16. 2026-08-12 18:50 UTCVendor advisory
  17. 2026-08-12 18:50 UTCGHSA enrichment
  18. 2026-08-12 13:51 UTCEPSS rescore
  19. 2026-08-11 17:00 UTCEG score recompute
  20. 2026-08-11 17:00 UTCVendor advisory
  21. 2026-08-11 16:59 UTCGHSA enrichment
  22. 2026-08-11 13:43 UTCEPSS rescore
  23. 2026-08-11 02:35 UTCEG score recompute
  24. 2026-08-11 02:35 UTCVendor advisory
  25. 2026-08-11 02:35 UTCGHSA enrichment
  26. 2026-08-11 00:00 UTCEPSS rescore
  27. 2026-08-10 05:22 UTCVendor advisory
  28. 2026-08-10 05:22 UTCGHSA enrichment
  29. 2026-08-09 16:40 UTCEG score recompute
  30. 2026-08-09 16:40 UTCVendor advisory
  31. 2026-08-09 16:39 UTCGHSA enrichment
  32. 2026-08-09 13:46 UTCEPSS rescore
  33. 2026-08-09 03:57 UTCEG score recompute
  34. 2026-08-09 03:57 UTCVendor advisory
  35. 2026-08-09 03:57 UTCGHSA enrichment
  36. 2026-08-08 16:37 UTCEPSS rescore
  37. 2026-08-08 02:04 UTCEG score recompute
  38. 2026-08-08 02:04 UTCVendor advisory
  39. 2026-08-08 02:04 UTCGHSA enrichment
  40. 2026-08-07 13:22 UTCEG score recompute
  41. 2026-08-07 13:22 UTCVendor advisory
  42. 2026-08-07 13:22 UTCGHSA enrichment
  43. 2026-08-06 13:46 UTCEPSS rescore
  44. 2026-08-06 12:06 UTCVendor advisory
  45. 2026-08-06 12:06 UTCGHSA enrichment
  46. 2026-08-05 23:20 UTCEG score recompute
  47. 2026-08-05 23:20 UTCVendor advisory
  48. 2026-08-05 23:20 UTCGHSA enrichment
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-04 15:10 UTCEPSS rescore
  51. 2026-08-04 10:38 UTCEPSS rescore
  52. 2026-08-03 21:33 UTCEG score recompute
  53. 2026-08-03 21:33 UTCVendor advisory
  54. 2026-08-03 21:33 UTCGHSA enrichment
  55. 2026-08-03 10:36 UTCEPSS rescore
  56. 2026-08-03 01:52 UTCVendor advisory
  57. 2026-08-03 01:52 UTCGHSA enrichment
  58. 2026-08-02 13:10 UTCEG score recompute
  59. 2026-08-02 13:10 UTCVendor advisory
  60. 2026-08-02 13:10 UTCGHSA enrichment
  61. 2026-08-02 02:27 UTCEPSS rescore
  62. 2026-08-01 04:16 UTCEPSS rescore
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-28 15:36 UTCEPSS rescore
  66. 2026-07-27 14:13 UTCEPSS rescore
  67. 2026-07-26 14:54 UTCEPSS rescore
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-25 14:18 UTCEPSS rescore
  70. 2026-07-24 14:17 UTCEPSS rescore
  71. 2026-07-23 14:18 UTCEPSS rescore
  72. 2026-07-23 03:11 UTCEG score recompute▲ 0.50
  73. 2026-07-22 14:08 UTCEPSS rescore
  74. 2026-07-21 15:24 UTCEPSS rescore
  75. 2026-07-20 17:08 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-41082?
CVE-2026-41082 is a high vulnerability published on April 16, 2026. In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.
When was CVE-2026-41082 disclosed?
CVE-2026-41082 was first published in the National Vulnerability Database on April 16, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41082 actively exploited?
CVE-2026-41082 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 89.3% of all scored CVEs.
What is the CVSS score of CVE-2026-41082?
CVE-2026-41082 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-41082?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41082, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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