How severe is CVE-2026-82481?

CVE-2026-82481 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-82481 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-82481?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-82481 published?

CVE-2026-82481 was published on 2026-08-29 and last updated on 2026-09-01.

CVE-2026-82481

CVE-2026-82481 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-180.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-180
Published: 2026-08-29
Last modified: 2026-09-01

Description

The cohttp package before 6.3.0 for OCaml allows directory traversal.

Frequently asked questions

What is CVE-2026-82481?: The cohttp package before 6.3.0 for OCaml allows directory traversal.
How severe is CVE-2026-82481?: CVE-2026-82481 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-82481 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-82481?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-82481 published?: CVE-2026-82481 was published on 2026-08-29 and last updated on 2026-09-01.

References

https://github.com/mirage/ocaml-cohttp/pull/1145

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