OESA-2026-2770

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-2770
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-2770.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-2770
Upstream
Published
2026-06-24T11:11:41Z
Modified
2026-08-18T01:21:11.197096945Z
Severity
  • 6.9 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
Summary
expat security update
Details

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial.

Security Fix(es):

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).(CVE-2026-56131)

In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.(CVE-2026-56132)

Database specific 
{
    "severity": "Medium"
}
References

Affected packages

openEuler:24.03-LTS-SP3 / expat

Package

Name
expat
Purl
pkg:rpm/openEuler/expat&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.0-21.oe2403sp3

Ecosystem specific 

{
    "x86_64": [
        "expat-2.5.0-21.oe2403sp3.x86_64.rpm",
        "expat-debuginfo-2.5.0-21.oe2403sp3.x86_64.rpm",
        "expat-debugsource-2.5.0-21.oe2403sp3.x86_64.rpm",
        "expat-devel-2.5.0-21.oe2403sp3.x86_64.rpm"
    ],
    "aarch64": [
        "expat-2.5.0-21.oe2403sp3.aarch64.rpm",
        "expat-debuginfo-2.5.0-21.oe2403sp3.aarch64.rpm",
        "expat-debugsource-2.5.0-21.oe2403sp3.aarch64.rpm",
        "expat-devel-2.5.0-21.oe2403sp3.aarch64.rpm"
    ],
    "src": [
        "expat-2.5.0-21.oe2403sp3.src.rpm"
    ],
    "noarch": [
        "expat-help-2.5.0-21.oe2403sp3.noarch.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-2770.json"