CVE-2026-1489Glib: glib: memory corruption via integer overflow in unicode case conversion
- 5.4MediumCVSS base score
- 0.37%Exploitation in 30 daysEPSS · top 69% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A flaw was found in GLib. An integer overflow vulnerability in its Unicode case conversion implementation can lead to memory corruption. By processing specially crafted and extremely large Unicode strings, an attacker could trigger an undersized memory allocation, resulting in out-of-bounds writes. This could cause applications utilizing GLib for string conversion to crash or become unstable.
Timeline
ID reserved
By redhat
Published
- 9 months later
· 9 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L |
| NVDNVD · Deferred | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.37% · top 69% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Affected products
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 10
All versions: affected
Red Hat · Red Hat Enterprise Linux 6
All versions: affected
Red Hat · Red Hat Enterprise Linux 7
All versions: affected
Red Hat · Red Hat Enterprise Linux 8
All versions: affected
Red Hat · Red Hat Enterprise Linux 8
All versions: affected
Red Hat · Red Hat Enterprise Linux 8
All versions: affected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unknown
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
Red Hat · Red Hat OpenShift AI (RHOAI)
All versions: unaffected
What to do
Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
References
References4
- https://access.redhat.com/security/cve/CVE-2026-1489 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2433348 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/glib/-/issues/3872 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-4826 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-1489)Record last updated .