CVE-2026-22034

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 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

0.71% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 53.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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

Analyzed. NVD last modified this record on 2026-06-17.

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

2026-01-08 14:49Z9 MO AGO

Last updated

2026-01-08 15:06Z9 MO AGO

Reserved

2026-01-05

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Critical (CVSS 9.2)

CNA CVSS vector

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

Weaknesses

• CWE-636Not Failing Securely ('Failing Open')Class

Data version

5.2

Document digest

d13b8ba1c34b9a5969448685d9c375e67531a23dd5336c5323aaf9447192f172

• github.comhttps://github.com/jvoisin/snuffleupagus/security/advisories/GHSA-c4ch-xw5p-2mvcx_refsource_CONFIRM
• github.comhttps://github.com/jvoisin/snuffleupagus/commit/9278dc77bab2a219e770a1b31dd6797bc9070e37x_refsource_MISC
• github.comhttps://github.com/jvoisin/snuffleupagus/blob/9278dc77bab2a219e770a1b31dd6797bc9070e37/src/sp_upload_validation.c#L92-L100x_refsource_MISC
• github.comhttps://github.com/jvoisin/snuffleupagus/blob/v0.12.0/scripts/upload_validation.phpx_refsource_MISC
• github.comhttps://github.com/jvoisin/snuffleupagus/blob/v0.12.0/scripts/upload_validation.pyx_refsource_MISC
• github.comhttps://github.com/php/php-src/blob/e4098da58a9eaee759d728d98a27d809cde37671/ext/standard/dl.c#L165-L166x_refsource_MISC
• github.comhttps://github.com/php/php-src/blob/e4098da58a9eaee759d728d98a27d809cde37671/main/rfc1867.c#L1269-L1274x_refsource_MISC
• snuffleupagus.readthedocs.iohttps://snuffleupagus.readthedocs.io/config.html#upload-validationx_refsource_MISC