CVE-2026-25223

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 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

0.80% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 54.1% of scored records. A rank, not a probability.

NVD base score

7.5 (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:U/C:N/I:H/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-07-15.

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

2026-02-03 21:21Z7 MO AGO

Last updated

2026-07-15 01:16Z1 MO AGO

Reserved

2026-01-30

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-436Interpretation ConflictClass
• CWE-179Incorrect Behavior Order: Early ValidationBase

Data version

5.2

Document digest

a023df1527abd28462b41511dffc476bf029b8fef51c42901b0cb016a61868eb

• github.comhttps://github.com/fastify/fastify/security/advisories/GHSA-jx2c-rxcm-jvmqx_refsource_CONFIRM
• github.comhttps://github.com/fastify/fastify/commit/32d7b6add39ddf082d92579a58bea7018c5ac821x_refsource_MISC
• hackerone.comhttps://hackerone.com/reports/3464114x_refsource_MISC
• fastify.devhttps://fastify.dev/docs/latest/Reference/Validation-and-Serializationx_refsource_MISC
• github.comhttps://github.com/fastify/fastify/blob/759e9787b5669abf953068e42a17bffba7521348/lib/content-type-parser.js#L125x_refsource_MISC
• github.comhttps://github.com/fastify/fastify/blob/759e9787b5669abf953068e42a17bffba7521348/lib/validation.js#L272x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-25223vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2436560https://bugzilla.redhat.com/show_bug.cgi?id=2436560issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25223.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:5807vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:10184vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6192vendor-advisoryx_refsource_REDHAT