CVE-2026-44312

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.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 3.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-26.

Red Hat severity

Moderate. 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

2026-05-14 16:15Z5 MO AGO

Last updated

2026-05-15 18:05Z5 MO AGO

Reserved

2026-05-05

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 5.8)

CNA CVSS vector

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

Weaknesses

• CWE-295Improper Certificate ValidationBase
• CWE-829Inclusion of Functionality from Untrusted Control SphereBase

Data version

5.2

Document digest

7be6af1dc9488b638b7c5d615ce762c718239e0cdf9658a3b441bdc07aae3bb4

• github.comhttps://github.com/premailer/css_parser/security/advisories/GHSA-ff6c-w6qf-7xqcx_refsource_CONFIRM
• github.comhttps://github.com/premailer/css_parser/issues/185x_refsource_MISC
• github.comhttps://github.com/premailer/css_parser/commit/35e689c904225add78e0c488cf04bad052666449x_refsource_MISC
• github.comhttps://github.com/premailer/css_parser/commit/e0c95d5abe91b237becb90ff316531a6547ada18x_refsource_MISC