Bug 2502945 (CVE-2026-26081)

Summary: CVE-2026-26081 haproxy: HAProxy: Data integrity and availability vulnerability in NEW_TOKEN format
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, amctagga, aoconnor, aos-team-art-private, asdas, bniver, dpaolell, flucifre, gmeno, groman, jdelft, jupierce, lgarciaa, mbenjamin, mbiarnes, mhackett, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, sostapov, suppawar, vereddy, vlaad, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in HAProxy. This vulnerability, stemming from a missing length check in the NEW_TOKEN format, could allow a remote attacker to cause a low impact on data integrity and availability. This means an attacker might be able to subtly alter data or temporarily disrupt the service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-07-20 19:01:40 UTC
HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEW_TOKEN format. HAProxy Enterprise and ALOHA are also affected.