5.3

CVE-2026-7009: curl Improper Certificate Validation

CVSS: 5.3v3.1MediumAnalyzed
AliasesALPINE-CVE-2026-7009
Published 13-05-2026Last modified 13-05-2026
Open JSON

Vulnerability summary

CVE-2026-7009 is a medium (CVSS 5.3) Improper Certificate Validation vulnerability in curl. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 23% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.32%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2026:19106

Timeline

  1. 13-05-2026
    PublishedVulnerability first disclosed.
  2. 13-05-2026
    Last modifiedVulnerability information updated.

Description

When curl is told to use the Certificate Status Request TLS extension, often referred to as *OCSP stapling*, to verify that the server certificate is valid, it fails to detect OCSP problems and instead wrongly consider the response as fine.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.32%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

+0.04 pp

From 0.27% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.32%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (hackerone.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Alpine1 product
  • curl≥ 8.17.0, < 8.20.0-r0
Curl1 product
  • curl8.19.0 | 8.18.0 | 8.17.0
Haxx1 product
  • curl≥ 8.17.0, < 8.20.0

3 vendors · 3 products

References

5 links