CVE-2026-5260
HIGHCVSS 8.2/10EPSS 0.73%
Last modified
CVE-2026-5260 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. EPSS estimates a 0.73% chance of exploitation in the next 30 days.
Description
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | All versions |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | All versions |
| Red Hat | Red Hat Enterprise Linux 8 | All versions |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | All versions |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | All versions |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | All versions |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | All versions |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | All versions |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | All versions |
| Red Hat | Red Hat Enterprise Linux 9 | All versions |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | All versions |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | All versions |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | All versions |
| Red Hat | Red Hat Discovery 2 | All versions |
| Red Hat | Red Hat Hardened Images | All versions |
| Red Hat | Red Hat Update Infrastructure 5 | All versions |
| Red Hat | Red Hat Enterprise Linux 6 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-5260?
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
How severe is CVE-2026-5260?
CVE-2026-5260 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.
How do I fix CVE-2026-5260?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-5255A vulnerability was detected in code-projects Simple Laundry…6.1
- CVE-2026-5256A flaw has been found in code-projects Simple Laundry System…9.8
- CVE-2026-5257A vulnerability has been found in code-projects Simple Laund…9.8
- CVE-2026-5258A vulnerability was found in Sanster IOPaint 1.5.3. Impacted…7.3
- CVE-2026-52584Buffer Overflow vulnerability in libjxl v.0.11.2 and before …7.1
- CVE-2026-5259A vulnerability was determined in AutohomeCorp frostmourne u…6.3
- CVE-2026-5261A vulnerability was identified in Shandong Hoteam InforCente…7.3
- CVE-2026-5262GitLab has remediated an issue in GitLab CE/EE affecting all…6.1
- CVE-2026-5263URI nameConstraints from constrained intermediate CAs are pa…6.5
- CVE-2026-5264Heap buffer overflow in DTLS 1.3 ACK message processing. A r…9.8
- CVE-2026-5265When generating an ICMP Destination Unreachable or Packet To…6.5
- CVE-2026-52656An issue in SJCAM AllWinner Tech products SJ4000-Air V1.4C a…9.8
Are you affected by CVE-2026-5260?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST