> CVE-2026-40894 [MEDIUM]

« BACK_TO_HOME
PUBLISHED
2026-04-23 19:17
MODIFIED
2026-04-23 19:17
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.46%
Top 60.1%
DATA SOURCES:
NVD đź”— 2026-04-23 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-08 GITHUB đź”— 2026-11-05 OSV đź”— 2026-11-02

> DESCRIPTION

OpenTelemetry dotnet is a dotnet telemetry framework. In OpenTelemetry.Api 0.5.0-beta.2 to 1.15.2 and OpenTelemetry.Extensions.Propagators 1.3.1 to 1.15.2, The implementation details of the baggage, B3 and Jaeger processing code in the OpenTelemetry.Api and OpenTelemetry.Extensions.Propagators NuGet packages can allocate excessive memory when parsing which could create a potential denial of service (DoS) in the consuming application. This vulnerability is fixed in 1.15.3.

> 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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EXPLOITABILITY
3.9
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises 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-789

> CWE DETAILED DESCRIPTIONS

CWE-789: Memory Allocation with Excessive Size Value - The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

> GITHUB SECURITY ADVISORY

GHSA-g94r-2vxg-569j MODERATE

OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers

AFFECTED PACKAGES:
NUGET / OpenTelemetry.Extensions.Propagators
>= 1.3.1, < 1.15.3
Fixed in: 1.15.3
NUGET / OpenTelemetry.Api
>= 0.5.0-beta.2, < 1.15.3
Fixed in: 1.15.3

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers

AFFECTED PACKAGES:
Unknown / Unknown
131 versions affected
ALIASES:
GHSA-g94r-2vxg-569j

> HISTORIQUE DES MODIFICATIONS

Première apparition
23/04/2026 19:17
Source: NVD
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-789: Memory Allocation with Excessive Size Value - The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing ar...
Total des modifications: 1 Dernière mise à jour: 6 months ago

> REFERENCES

https://github.com/open-telemetry/opentelemetry-dotnet/pull/1048
https://github.com/open-telemetry/opentelemetry-dotnet/pull/3244
https://github.com/open-telemetry/opentelemetry-dotnet/pull/3309
https://github.com/open-telemetry/opentelemetry-dotnet/pull/533
https://github.com/open-telemetry/opentelemetry-dotnet/pull/7061
https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-...
« BACK_TO_HOME