CVE-2026-72916

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

0.36% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 28.9% of scored records. A rank, not a probability.

NVD base score

6.3 (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:N/VA:N/SC:L/SI:L/SA:L/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

Received. NVD last modified this record on 2026-08-13.

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

2026-08-10 21:19Z25 DAYS AGO

Last updated

2026-08-13 15:13Z22 DAYS AGO

Reserved

2026-08-10

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

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

Weaknesses

• CWE-918Server-Side Request Forgery (SSRF)Base
• CWE-1286Improper Validation of Syntactic Correctness of InputBase

Data version

5.2

Document digest

a75e901cda0c70d8adeb494fb0913e097d0a2eb03d0b4e2eee84c61ed8994c3d

• github.comhttps://github.com/mastodon/mastodon/security/advisories/GHSA-vwhj-3g83-v276x_refsource_CONFIRM
• github.comhttps://github.com/mastodon/mastodon/commit/18c61f286f1f5718a8f517940ba384866ffa3892x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/commit/467c933459c7d0e5513475b9e4888afaedfb1074x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/commit/930aa9fee26bf9eaefe27826fa1061288d83373bx_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/commit/da47a1bd3cd07935d7ca55a1f4f1a76f7f167e0dx_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.4.21x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.5.14x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.6.4x_refsource_MISC
• github.comhttps://github.com/mastodon/mastodon/releases/tag/v4.7.0-beta.1x_refsource_MISC