CVE-2026-72522

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Source
https://cve.org/CVERecord?id=CVE-2026-72522
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-72522.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-72522
Downstream
AZL (1)
BELL (1)
DEBIAN (1)
ECHO (1)
MGASA (1)
OESA (6)
openSUSE (3)
RHSA (1)
SUSE (8)
UBUNTU (1)
Related
openSUSE (3)
SUSE (8)
Published
2026-08-10T03:28:04Z
Modified
2026-10-20T10:56:43Z
Severity
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.

Database specific 
{
    "cna_assigner":  "mitre",
    "cwe_ids":  [
        "CWE-125"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72522.json"
}
References

Affected packages

Git / github.com/libexpat/libexpat

Affected ranges

Type
GIT
Repo
https://github.com/libexpat/libexpat
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
92810461043fce37e70079b37ab1f04490a8f039
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.8.3"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2.8.3"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

Other
REC1_0
R_1_95_0
R_1_95_2
R_1_95_3
R_1_95_4
R_1_95_5
R_1_95_6
R_1_95_7
R_1_95_8
R_2_0_0
R_2_0_1
R_2_1_0
R_2_1_1
R_2_2_0
R_2_2_1
R_2_2_10
R_2_2_2
R_2_2_3
R_2_2_4
R_2_2_5
R_2_2_6
R_2_2_7
R_2_2_8
R_2_2_9
R_2_3_0
R_2_4_0
R_2_4_1
R_2_4_2
R_2_4_3
R_2_4_4
R_2_4_5
R_2_4_6
R_2_4_7
R_2_4_8
R_2_4_9
R_2_5_0
R_2_6_0
R_2_6_1
R_2_6_2
R_2_6_3
R_2_6_4
R_2_7_0
R_2_7_1
R_2_7_2
R_2_7_3
R_2_7_4
R_2_7_5
R_2_8_0
R_2_8_1
R_2_8_2
V1990307
V19981122
V19981231
V19990109
V19990425
V19990626
V19990709
V19990728
V19991013
V1_0
V1_1
V20000512
beta2
beta3
beta4
jclark-orig
libexpat-alpha-1
sourceforge_init
start

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-72522.json"