CVE-2026-6654

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

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 6.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

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

2026-04-20 10:05Z6 MO AGO

Last updated

2026-07-15 00:41Z3 MO AGO

Reserved

2026-04-20

Assigning CNA

mozilla

Record state

PUBLISHED

Severity

Medium (CVSS 5.1)

CNA CVSS vector

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

Weaknesses

• CWE-415Double FreeVariant
• CWE-416Use After FreeVariant
• CWE-1341Multiple Releases of Same Resource or HandleBase

Data version

5.2

Document digest

f4f6802bbaaca9d4ce8eda3d73f3ec8fb25e16502a24e850dade114a7984d259

• github.comhttps://github.com/mozilla/thin-vec/security/advisories/GHSA-xphw-cqx3-667j
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-6654vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2459689https://bugzilla.redhat.com/show_bug.cgi?id=2459689issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6654.jsonx_sadp-csaf-vex