CVE-2026-28498

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited 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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 13.4% of scored records. A rank, not a probability.

NVD base score

8.2 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Modified. NVD last modified this record on 2026-08-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

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

2026-03-16 18:03Z5 MO AGO

Last updated

2026-08-24 12:07Z11 DAYS AGO

Reserved

2026-02-27

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-354Improper Validation of Integrity Check ValueBase
• CWE-573Improper Following of Specification by CallerClass
• CWE-325Missing Cryptographic StepBase

Data version

5.2

Document digest

b7e669c376cec704551faeaca4c93ed07b0515ce1279dea70ba6630b6ba1be93

• github.comhttps://github.com/authlib/authlib/security/advisories/GHSA-m344-f55w-2m6jx_refsource_CONFIRM
• github.comhttps://github.com/authlib/authlib/commit/b9bb2b25bf8b7e01512d847a95c1749646eaa72bx_refsource_MISC
• github.comhttps://github.com/authlib/authlib/releases/tag/v1.6.9x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-28498vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2448182https://bugzilla.redhat.com/show_bug.cgi?id=2448182issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28498.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6309vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6720vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6568vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6497vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6567vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6912vendor-advisoryx_refsource_REDHAT