CVE-2026-86144
published 2026-09-05CVE-2026-86144: In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example…
PriorityP344high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.19%
7.8th percentile
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ubuntu | libxml2 | — | — |
| xmlsoft | libxml2 | < 2.15.4 | 2.15.4 |
| xmlsoft | libxml2 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_redhat5.6MEDIUM
vendor_ubuntu5.5MEDIUM
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Ubuntu
libxml2 vulnerabilities
vendor_ubuntu·2026-10-08·CVSS 5.5
CVE-2026-86144 [MEDIUM] libxml2 vulnerabilities
Title: libxml2 vulnerabilities
Summary: Several security issues were fixed in libxml2.
Yirou Yang discovered that libxml2 incorrectly handled certain XML
catalogs. If a user or automated system was tricked into processing a
specially crafted XML catalog, an attacker could possibly use this issue to
cause libxml2 to crash, resulting in a denial of service. (CVE-2026-76781)
It was discovered that libxml2 incorrectly handled certain large qualified
names, leading to a heap-based buffer overflow. An attacker could possibly
use this issue to cause libxml2 to crash, resulting in a denial of service,
or possibly execute arbitrary code. (CVE-2026-86138)
It was discovered that libxml2 incorrectly handled escaping certain large
URI strings. An attacker could possibly use this issue to cause libx
Red Hat
libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.
vendor_redhat·2026-09-05·CVSS 5.6
CVE-2026-86144 [MEDIUM] CWE-611 libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.
libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.
A flaw was found in libxml2's xinclude processing. The xmlXIncludeProcess and xmlXIncludeProcessTree functions fail to propagate parseFlags, such as XML_PARSE_NONET. This oversight can allow a custom resource loader to access external internet resources, potentially leading to XML external entity (XXE) injection, Server-Side Request Forgery (SSRF), or a denial of service (DoS) if an attacker controls the external resource.
Package: libxml2 (Red Hat Hardened Images) - Affected
Package: swift-lang (Red Hat Hardened Images) - Affected
VulDB
xmlsoft libxml2 up to 2.15.3 xinclude xmlXIncludeProcess parseFlags xml external entity reference (Nessus ID 343103)
vuldb·2026-09-05·CVSS 5.6
CVE-2026-86144 [MEDIUM] xmlsoft libxml2 up to 2.15.3 xinclude xmlXIncludeProcess parseFlags xml external entity reference (Nessus ID 343103)
A vulnerability classified as critical has been found in xmlsoft libxml2 up to 2.15.3. This affects the function xmlXIncludeProcess of the component xinclude. The manipulation of the argument parseFlags leads to xml external entity reference.
This vulnerability is traded as CVE-2026-86144. It is possible to initiate the attack remotely. There is no exploit available.
It is recommended to upgrade the affected component.
GHSA
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags.
ghsa_unreviewed·2026-09-05
CVE-2026-86144 [MEDIUM] CWE-669 In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags.
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-86144 libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
bugzilla·2026-09-08·CVSS 5.6
CVE-2026-86144 [MEDIUM] CVE-2026-86144 libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
CVE-2026-86144 libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
Bugzilla
CVE-2026-86144 mingw-libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [epel-all]
bugzilla·2026-09-08·CVSS 5.6
CVE-2026-86144 [MEDIUM] CVE-2026-86144 mingw-libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [epel-all]
CVE-2026-86144 mingw-libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
Bugzilla
CVE-2026-86144 mingw-libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
bugzilla·2026-09-08·CVSS 5.6
CVE-2026-86144 [MEDIUM] CVE-2026-86144 mingw-libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
CVE-2026-86144 mingw-libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
Bugzilla
CVE-2026-86144 pcem: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
bugzilla·2026-09-08·CVSS 5.6
CVE-2026-86144 [MEDIUM] CVE-2026-86144 pcem: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
CVE-2026-86144 pcem: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation. [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
Bugzilla
CVE-2026-86144 libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.
bugzilla·2026-09-05·CVSS 5.6
CVE-2026-86144 [MEDIUM] CVE-2026-86144 libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.
CVE-2026-86144 libxml2: libxml2: Information disclosure, SSRF, or denial of service due to improper parseFlags propagation.
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
2026-09-05
Published