NVD - CVE-2026-24515 (original) (raw)
Description
In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.
Metrics
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:
NIST: NVD
NVD assessment not yet provided.
CVSS 3.x Severity and Vector Strings:
NIST: NVD
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
CNA: MITRE
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0 Severity and Vector Strings:
NIST: NVD
Base Score: N/A
NVD assessment not yet provided.
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/libexpat/libexpat/pull/1131 | MITRE | Issue Tracking |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | MITRE |
Known Affected Software Configurations Switch to CPE 2.2
Change History
3 change records found show changes
Reanalysis by NIST 2/05/2026 12:27:53 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CVSS V3.1 | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L | |
| Removed | CVSS V3.1 | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Initial Analysis by NIST 1/30/2026 12:54:41 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CVSS V3.1 | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | |
| Added | CPE Configuration | OR *cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* versions up to (excluding) 2.7.4 | |
| Added | Reference Type | MITRE: https://github.com/libexpat/libexpat/pull/1131 Types: Issue Tracking |
New CVE Received from MITRE 1/23/2026 3:16:01 AM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | Description | In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data. | |
| Added | CVSS V3.1 | AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | |
| Added | CWE | CWE-476 | |
| Added | Reference | https://github.com/libexpat/libexpat/pull/1131 |