SUSE jline · Security update for jline3
Affects SUSE jlineSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.5 High.
Data as of 31 Oct 2026, 20:20 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 48% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10jlinepkg:deb/ubuntu/jline?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10jline2pkg:deb/ubuntu/jline2?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10jline3pkg:deb/ubuntu/jline3?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSjlinepkg:deb/ubuntu/jline?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSjline2pkg:deb/ubuntu/jline2?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSjline3pkg:deb/ubuntu/jline3?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
This update for jline3 fixes the following issues: - CVE-2026-56740: unauthenticated remote memory exhaustion via unbounded Telnet `NEW-ENVIRON` variables (bsc#1269021). - CVE-2026-56741: unauthenticated remote DoS via Unbounded Telnet NAWS Terminal Geometry (bsc#1270083). Changes for jline3: - Update to upstream version 3.30.15 + fix: guard regex matching against catastrophic backtracking (ReDoS) (#2018, backport of #2012): * Adds SafeRegex utility with TimeoutCharSequence to enforce wall-clock deadlines during regex matching * Fixes 8 locations across terminal, reader, and builtins where user-controlled input could trigger catastrophic backtracking * Addresses GHSA-r2xf-8xr9-62gw, GHSA-2v9w-34q6-wpqx, GHSA-ph9c-7hw9-vhhw, GHSA-5q95-hrpc-m3w3 + fix: backport security hardening (#1986, #1995): * Create persisted history file with owner-only permissions * Use exclusive create for extracted native library temp files + fix: warn on insecure permissions when history file created concurrently
References
- suse.com/support/security/rating/ (opens in a new tab)
- ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21423-1.json (opens in a new tab)
- bugzilla.suse.com/1269021 (opens in a new tab)
- bugzilla.suse.com/1270083 (opens in a new tab)
- suse.com/security/cve/CVE-2026-56740/ (opens in a new tab)
- suse.com/security/cve/CVE-2026-56741/ (opens in a new tab)