OESA-2026-4177

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4177

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2026-4177.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2026-4177

Upstream

CVE-2026-93990

Published

2026-09-30T13:47:20Z

Modified

2026-10-01T02:00:06Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X 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):

Expat through 2.8.4 fails to validate low surrogates following high surrogates in UTF-16 input, allowing malformed UTF-16 sequences to be accepted. Attackers can craft UTF-16 encoded XML with lone high surrogates that consume following code units, hiding markup characters from the parser and enabling XML injection attacks.(CVE-2026-93990)

Database specific

{
    "severity":  "High"
}

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

0 Unknown introduced version / All previous versions are affected

Fixed

2.5.0-28.oe2403sp3

Ecosystem specific

{
    "aarch64":  [
        "expat-2.5.0-28.oe2403sp3.aarch64.rpm",
        "expat-debuginfo-2.5.0-28.oe2403sp3.aarch64.rpm",
        "expat-debugsource-2.5.0-28.oe2403sp3.aarch64.rpm",
        "expat-devel-2.5.0-28.oe2403sp3.aarch64.rpm"
    ],
    "noarch":  [
        "expat-help-2.5.0-28.oe2403sp3.noarch.rpm"
    ],
    "src":  [
        "expat-2.5.0-28.oe2403sp3.src.rpm"
    ],
    "x86_64":  [
        "expat-2.5.0-28.oe2403sp3.x86_64.rpm",
        "expat-debuginfo-2.5.0-28.oe2403sp3.x86_64.rpm",
        "expat-debugsource-2.5.0-28.oe2403sp3.x86_64.rpm",
        "expat-devel-2.5.0-28.oe2403sp3.x86_64.rpm"
    ]
}

Database specific

source

"https://repo.openeuler.org/security/data/osv/OESA-2026-4177.json"