CVE-2026-49283

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.47% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 40.5% of scored records. A rank, not a probability.

NVD base score

8.7 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

NVD analysis status

Deferred. NVD last modified this record on 2026-09-18.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-19 14:47Z2 MO AGO

Last updated

2026-08-19 18:19Z2 MO AGO

Reserved

2026-05-28

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Weaknesses

• CWE-295Improper Certificate ValidationBase

Data version

5.2

Document digest

91f6833163b71c2e61f0069d8db407172e8e9bc4a7f9c461ccf18dcc324540b5

• github.comhttps://github.com/simplesamlphp/saml2/security/advisories/GHSA-6929-8p9f-26jxx_refsource_CONFIRM
• github.comhttps://github.com/simplesamlphp/saml2/commit/4a71b20d8d845579fd0a54d6449c265b40db459dx_refsource_MISC
• github.comhttps://github.com/simplesamlphp/saml2/commit/a2c1ac588c70d7b7998546cf32675fb113f22a5fx_refsource_MISC
• github.comhttps://github.com/simplesamlphp/saml2/commit/d5c213132ef671c0018a11252322034dbddd735ax_refsource_MISC
• github.comhttps://github.com/simplesamlphp/saml2/commit/e2df7992609964951b2a3e7d6566b7427b2a968fx_refsource_MISC