> CVE-2026-45186 [LOW]

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PUBLISHED
2026-05-10 07:16
MODIFIED
2026-05-10 07:16
CVSS_SCORE V3
2.9
EPSS (Prob. Exploit)
0.48%
Top 59.5%
DATA SOURCES:
NVD đź”— 2026-05-10 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-10-25 OSV đź”— 2026-11-02 MSRC đź”— 2026-11-02

> DESCRIPTION

In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
EXPLOITABILITY
1.4
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Local (L)
Exploit nécessite un accès local au système
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-407

> CWE DETAILED DESCRIPTIONS

CWE-407: Inefficient Algorithmic Complexity - An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: expat security update
An update for expat is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CV...
Red Hat Security Advisory: expat security update
An update for expat is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (C...
Red Hat Security Advisory: expat security update
An update for expat is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CV...
Red Hat Security Advisory: Red Hat Update Infrastructure 5.2 security update
The latest release of Red Hat Update Infrastructure. For more details, see the product documentation.
Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP4 security update
Red Hat JBoss Core Services Apache HTTP Server 2.4.62 Service Pack 4 is now available. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability S...
Red Hat Security Advisory: A Subscription Management tool for finding and reporting Red Hat product usage
A Subscription Management tool for finding and reporting Red Hat product usage
Red Hat Security Advisory: Red Hat Update Infrastructure 5.3 Technology Preview security update
A new set of Red Hat Update Infrastructure container images is now available as a Technology Preview in the Red Hat container registry.
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
An update for Red Hat Hardened Images RPMs is now available.
Red Hat Security Advisory: thunderbird security, bug fix, and enhancement update
An update for thunderbird is now available for Red Hat Enterprise Linux 10.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common...
Red Hat Security Advisory: firefox security, bug fix, and enhancement update
An update for firefox is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...
Red Hat Security Advisory: firefox security, bug fix, and enhancement update
An update for firefox is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (...
Red Hat Security Advisory: firefox security, bug fix, and enhancement update
An update for firefox is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: thunderbird security, bug fix, and enhancement update
An update for thunderbird is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring Syst...
Red Hat Security Advisory: thunderbird security, bug fix, and enhancement update
An update for thunderbird is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important....
Red Hat Security Advisory: thunderbird security, bug fix, and enhancement update
An update for thunderbird is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common...

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

AFFECTED PACKAGES:
Unknown / Unknown
67 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
10/05/2026 07:16
Source: NVD
đź“Š ENRICHISSEMENT 01/06/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-407: Inefficient Algorithmic Complexity - An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an ...
Total des modifications: 1 Dernière mise à jour: 5 months ago

> REFERENCES

https://github.com/libexpat/libexpat/pull/1216
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