CVE-2026-82208CWE-295

CVE-2026-82208

High · published September 6, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
33.9
In the wild
Unconfirmed
What it is

With the wolfSSL backend, when CA caching is enabled and an

`CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can

silently reinstall the cached store after the callback returns. A certificate

trusted by the cached store but rejected by the callback-selected store is

then incorrectly accepted.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00407 · 33.9th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-09-06T22:17Z
Affected products (1)
ProductVersionsFixed in
haxx/curl≥ 8.9.1, < 8.22.08.22.0
References (3)
https://curl.se/docs/CVE-2026-82208.html · 2499f714-1537-4658-8207-48ae4bb9eae9https://curl.se/docs/CVE-2026-82208.json · 2499f714-1537-4658-8207-48ae4bb9eae9https://hackerone.com/reports/3973090 · 2499f714-1537-4658-8207-48ae4bb9eae9
EPSS history
Timeline
  • 08 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 06 SEP 17:49Z
    wolfSSL CA-cache hit overrides callback
    cvelistv5