What is CVE-2026-7790?

CVE-2026-7790 is a high-severity vulnerability in Ninenines Cowlib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-11.

How severe is CVE-2026-7790?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Ninenines Cowlib

CVE-2026-7790

Uncontrolled Resource Consumption vulnerability in ninenines cowlib (cow_http_te module) allows Excessive Allocation. The chunked transfer-encoding parser in cow_http_te accepts an unbounded number of hex digits in the chunk-size field. E…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.001 (29.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Ninenines Cowlib — versions 0.6.0, 8c0e428b012c59f553a264f285ed89d36f791e3e

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, Third Party Advisory, third-party-advisory)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, Third Party Advisory)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (Patch, patch)

Frequently asked questions

What is CVE-2026-7790?: CVE-2026-7790 is a high-severity vulnerability in Ninenines Cowlib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-11.
How severe is CVE-2026-7790?: High severity. CVSS v3 base score is 7.5 out of 10.