Bug 2539624 (CVE-2026-77420)
| Summary: | CVE-2026-77420 org.jline/jline-reader: JLine: Denial of Service vulnerability in history configuration processing | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | asyoung, ataylor, csuconic, dbruscin, eglynn, ehugonne, gmalinko, gtully, janstey, jhollowa, jjoyce, jpretori, jschluet, jsherman, kaycoth, kvanderr, lhh, mburns, mgarciac, pdelbell, prichard, rgemmell, rgodfrey, rstepani, sthirugn, tbish, tlavocat |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in JLine, a Java library for handling console input. An attacker who can control application or user configuration can supply a specially crafted regular expression to the `HISTORY_IGNORE` configuration variable. This malicious input can cause excessive CPU consumption when commands are added to history, leading to a Denial of Service (DoS) by indefinitely blocking the reader thread.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-09-23 18:25:23 UTC
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