Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-8932

CVE-2026-8932HIGH

curl curl — incomplete mTLS config matching in conn reuse

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  H  N    7.5   .0040   31.5     —

AFFECTED
  Product  Versions                                    Fixed
  curl     7.7.0 –                                     —
  curl     a1d6ad26100bc493c7b04f1301b1634b7f5aa8b4 –  —
  curl     8.20.0 –                                    —

TIMELINE
  May 19  Reserved by curl
  Jul 3   EXPLOIT PUBLISHED — CVE-2026-8932 (curl). Public exploit reference added.
  Jul 3   Published (CNA: curl)
  Sep 15  EXPLOIT PUBLISHED — CVE-2026-8932 (curl). Public exploit reference added.

CWE-305 · CNA: curl · CVSS v3.1 · 3 references · NVD status: Modified

Description

libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS settings related to client certificates were left out from the configuration match checks, making them match too easily. In particular options related to the private key.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
May 19, 2026	Reserved	Reserved by curl
July 3, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-8932 (curl). Public exploit reference added.
July 3, 2026	Published	Published (CNA: curl)
September 15, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-8932 (curl). Public exploit reference added.

Affected

Affected products and packages — 3 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
curl	curl	—	7.7.0	—
curl	curl	—	a1d6ad26100bc493c7b04f1301b1634b7f5aa8b4	—
curl	curl	—	8.20.0	—

Weaknesses

CWE-305

References (3)

https://curl.se/docs/CVE-2026-8932.html [Patch, Vendor Advisory]
https://curl.se/docs/CVE-2026-8932.json [Vendor Advisory]
https://hackerone.com/reports/3733910 [Exploit, Issue Tracking, Third Party Advisory]

Authoritative record: CVE-2026-8932 at cve.org

Vendors: curl

Weaknesses: CWE-305

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-8932 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.