Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-81829— Smallrye-jwt: quarkus-smallrye-jwt: smallrye-jwt: unauthenticated same-origin ssrf via unsanitized jwt kid header in awsalbkeyresolver

Quick assessment

Affected
Red Hat Exploit Intelligence
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 SmallRye JWT 的 中发现一个缺陷，该解析器被应用程序用于验证由 AWS 应用负载均衡器（AWS ALB）签名的 JSON Web Token（JWT）。当配置了 密钥提供者时，解析器在构建获取密钥的 URL 时，直接拼接了入站 JWT 中由攻击者控制的 头部值，但未对路径遍历字符或查询字符串分隔符进行过滤或规范化处理。这使得未认证的远程攻击者能够迫使应用服务器向已配置密钥端点所在的同一源上的任意路径发起 GET 请求。其结果是，攻击者可以在 JWT 签名验证执行之前，读取该源上可访问的非公开端点或内

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81829

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Smallrye-jwt: quarkus-smallrye-jwt: smallrye-jwt: unauthenticated same-origin ssrf via unsanitized jwt kid header in awsalbkeyresolver
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in SmallRye JWT's AwsAlbKeyResolver, which is used by applications to verify JSON Web Tokens signed by AWS Application Load Balancers. When the AWS_ALB key provider is configured, the resolver constructs the key-fetch URL by directly concatenating the attacker-controlled kid header value from an inbound JWT without sanitizing path traversal characters or query-string separators. This allows an unauthenticated remote attacker to force the application server to issue GET requests to arbitrary paths on the same origin as the configured key endpoint. As a result, non-public endpoints or internal data reachable on that origin may be read by the attacker before JWT signature verification takes place.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Exploit Intelligence - cpe:/a:redhat:exploit_intelligence:0
Red Hat Red Hat build of Apicurio Registry 3 - cpe:/a:redhat:apicurio_registry:3
Red Hat Red Hat build of Apicurio Registry 3 - cpe:/a:redhat:apicurio_registry:3
Red Hat Red Hat build of Quarkus - cpe:/a:redhat:quarkus:3
Red Hat Red Hat build of Quarkus - cpe:/a:redhat:quarkus:3
Red Hat Red Hat JBoss Enterprise Application Platform 8 - cpe:/a:redhat:jboss_enterprise_application_platform:8
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack - cpe:/a:redhat:jbosseapxp

II. Public POCs for CVE-2026-81829

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81829

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-81829 (1)

Other References for CVE-2026-81829 (1)

Same Patch Batch · Red Hat · 2026-09-17 · 8 CVEs total

CVE-2026-86320 7.8 HIGH Flatpak-builder: host code execution via `git am` hook execution in patch source extractio
CVE-2026-87742 7.5 HIGH Quarkus-websockets-next: denial of service (oom) in quarkus-websockets-next via unbounded
CVE-2026-92925 7.1 HIGH Redis: redis: out-of-bounds read via crafted cluster bus packets
CVE-2026-76781 5.5 MEDIUM Libxml2: libxml2: null pointer dereference parsing nextcatalog without catalog attribute
CVE-2026-92904 4.3 MEDIUM Rubygem-foreman_remote_execution: job output readable without object-level view_job_invoca
CVE-2026-92893 4.3 MEDIUM Rubygem-foreman_ansible: ansible inventory api ignores view_hosts permission filters, expo
CVE-2026-92894 4.3 MEDIUM Rubygem-foreman_ansible: unscoped lookupvalue deletion allows cross-model override value d

IV. Related Vulnerabilities

Same product: Exploit Intelligence
Same vendor: Red Hat
Same weakness: CWE-22

V. Comments for CVE-2026-81829

No comments yet

Leave a comment