CVE-2026-77423

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 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

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 39.6% 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:N/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-09-30.

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

2026-09-23 18:17Z1 MO AGO

Last updated

2026-09-24 14:10Z1 MO AGO

Reserved

2026-08-20

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:N/A:H

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.2

Document digest

fb09d81525d6b0c21d5b389722636cb24e02e34ec47f5401ae5d891b2781dd91

• github.comhttps://github.com/jline/jline3/security/advisories/GHSA-2v9w-34q6-wpqxx_refsource_CONFIRM
• github.comhttps://github.com/jline/jline3/pull/2012x_refsource_MISC
• github.comhttps://github.com/jline/jline3/pull/2018x_refsource_MISC
• github.comhttps://github.com/jline/jline3/commit/1d5fc3099e77938b971e197211cad2d4fbb17541x_refsource_MISC
• github.comhttps://github.com/jline/jline3/commit/341ee69ccc57b7733c1b40d6993219b64b3206aex_refsource_MISC
• github.comhttps://github.com/jline/jline3/releases/tag/4.3.1x_refsource_MISC
• github.comhttps://github.com/jline/jline3/releases/tag/jline-3.30.15x_refsource_MISC