CVE-2026-90819CWE-113CWE-93

CVE-2026-90819

High · published September 15, 2026

CVSS v3.1
7.3
EPSS
1%
Percentile
51.1
In the wild
Unconfirmed
What it is

A weakness has been identified in a2aproject a2a-java 1.2.0. The affected element is the function BasePushNotificationSender.dispatchNotification of the file server-common/src/main/java/org/a2aproject/sdk/server/tasks/BasePushNotificationSender.java of the component Authorization Header Construction. This manipulation causes http response splitting. The attack can be initiated remotely. Upgrading to version 1.3.0 is sufficient to fix this issue. Patch name: 247a655043f145f6f8e3853724b6a543eaa02001. You should upgrade the affected component.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
EPSS
0.00661 · 51.1th percentile
Weaknesses
CWE-113 · Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'); CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published
2026-09-15T01:17Z
References (9)
https://github.com/a2aproject/a2a-java/ · [email protected]https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001 · [email protected]https://github.com/a2aproject/a2a-java/pull/1043 · [email protected]https://github.com/a2aproject/a2a-java/pull/1053 · [email protected]https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final · [email protected]https://vuldb.com/cve/CVE-2026-90819 · [email protected]https://vuldb.com/submit/922996 · [email protected]https://vuldb.com/vuln/403322 · [email protected]https://vuldb.com/vuln/403322/cti · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 14 SEP 20:30Z
    a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting
    cvelistv5