CVE-2026-18938
Last modified
CVE-2026-18938 is a medium-severity vulnerability rated 6.2/10 on the CVSS scale. A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. EPSS estimates a 0.11% chance of exploitation in the next 30 days.
Description
A flaw was found in p11-kit. A local attacker, or one with equivalent access to a reachable RPC channel, could exploit an integer overflow vulnerability. By sending specially crafted messages, the attacker can cause the system to miscalculate memory allocation for nested attributes. This leads to a memory corruption issue, specifically a heap out-of-bounds write, which can crash the p11-kit RPC parsing process, resulting in a Denial of Service (DoS). This vulnerability is only exploitable on 32 bit systems.
Metrics
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 8 | All versions |
| Red Hat | Red Hat Enterprise Linux 9 | All versions |
| Red Hat | Red Hat Hardened Images | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-18938?
How severe is CVE-2026-18938?
How do I fix CVE-2026-18938?
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-2026-1893The Orbisius Random Name Generator plugin for WordPress is v…6.4
- CVE-2026-18931Use of Hard-coded Credentials vulnerability in TMT Machine I…9.1
- CVE-2026-18932Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2026-18933The wp-downloadmanager WordPress plugin, in version 1.68.11 …7.2
- CVE-2026-18934The RSS Aggregator by Feedzy WordPress plugin before 5.2.6 …5.5
- CVE-2026-18937The Broken Link Checker WordPress plugin before 2.4.12 does …9
- CVE-2026-1894A vulnerability was detected in WeKan up to 8.20. This impac…5.4
- CVE-2026-18941A flaw was found in Feast and feast-operator. The default co…7.7
- CVE-2026-18942A flaw was found in the Feast operator. A malicious tenant c…5.5
- CVE-2026-18943The WPC Admin Columns WordPress plugin before 2.3.4 does not…6.5
- CVE-2026-18944Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
- CVE-2026-18945The WP Helper Premium WordPress plugin before 4.7.6 does not…8.2
Are you affected by CVE-2026-18938?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST