CVE-2026-55086

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.
• 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

0.12% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 2.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Received. NVD last modified this record on 2026-08-25.

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

2026-08-19 19:35Z16 DAYS AGO

Last updated

2026-08-25 13:59Z10 DAYS AGO

Reserved

2026-06-16

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 4.2)

CNA CVSS vector

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

Weaknesses

• CWE-59Improper Link Resolution Before File Access ('Link Following')Base
• CWE-377Insecure Temporary FileClass

Data version

5.2

Document digest

fc8d9c644a50c8ba4d8f2373ee3aedf6e07724d81ecb9d4402c6d3822f07baa9

• github.comhttps://github.com/ether/etherpad/security/advisories/GHSA-2jwf-f4xq-f24hx_refsource_CONFIRM
• github.comhttps://github.com/ether/etherpad/pull/7784x_refsource_MISC
• github.comhttps://github.com/ether/etherpad/commit/8c6104c5d5daf41f0d454acc04d42dffa0e0d996x_refsource_MISC
• github.comhttps://github.com/ether/etherpad/releases/tag/v3.1.0x_refsource_MISC