> CVE-2026-55688 [MEDIUM]

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PUBLISHED
2026-07-01 20:17
MODIFIED
2026-07-01 20:17
CVSS_SCORE V3
4.0
EPSS (Prob. Exploit)
0.33%
Top 73.8%
DATA SOURCES:
NVD đź”— 2026-07-01 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-01 GITHUB đź”— 2026-11-05 OSV đź”— 2026-11-02

> DESCRIPTION

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In versions from 2.0.0 prior to 2.16.0 and from 3.0.0.Beta1 prior to 3.0.11, ThreadSafeCookieStore stored a cookie under the value of its Domain attribute without verifying that the responding host is allowed to set a cookie for that domain, leading to a cookie tossing / cookie injection issue. A host the client connects to can therefore plant a cookie scoped to an unrelated domain, and the client will then send that cookie on later requests to that domain. Applications that use a single AsyncHttpClient instance - and thus the default, shared CookieStore - to reach both an attacker-influenced host and a trusted host are impacted. This issue has been fixed in versions 2.16.0 and 3.0.11.

> 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:H/PR:N/UI:N/S:C/C:N/I:L/A:N
EXPLOITABILITY
2.2
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
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
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
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-1275

> CWE DETAILED DESCRIPTIONS

CWE-1275: Sensitive Cookie with Improper SameSite Attribute - The SameSite attribute for sensitive cookies is not set, or an insecure value is used.

> GITHUB SECURITY ADVISORY

GHSA-m452-q8c9-rg2f MODERATE

AsyncHttpClient stores cookie for an unrelated domain (cookie tossing) via ThreadSafeCookieStore

AFFECTED PACKAGES:
MAVEN / org.asynchttpclient:async-http-client
>= 2.0.0, < 2.16.0
Fixed in: 2.16.0
MAVEN / org.asynchttpclient:async-http-client
>= 3.0.0.Beta1, < 3.0.11
Fixed in: 3.0.11

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

AsyncHttpClient: Cookie stored for an unrelated domain (cookie tossing) via ThreadSafeCookieStore

AFFECTED PACKAGES:
Unknown / Unknown
107 versions affected
ALIASES:
GHSA-m452-q8c9-rg2f

> HISTORIQUE DES MODIFICATIONS

Première apparition
01/07/2026 20:17
Source: NVD
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-1275: Sensitive Cookie with Improper SameSite Attribute - The SameSite attribute for sensitive cookies is not set, or an insecure value is used.
Total des modifications: 1 Dernière mise à jour: 3 months ago

> REFERENCES

https://github.com/AsyncHttpClient/async-http-client/pull/2196
https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-m4...
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