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CVE-2026-44598

26
FAUCET Score

With valid login credentials, URL Redirection to Untrusted Site ('Open Redirect'), Server-Side Request Forgery (SSRF) vulnerability in Apache Shiro. This issue affects Apache Shiro from 2.0-alpha to 2.1.0, and 3.0.0-alpha-1, only when using shiro-jakarta-ee integration module. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue by encrypting the cookie. After successful login, Jakarta EE integration module uses shiroSavedRequest cookie to redirect to a particular web page after login. This cookie was not validated, and can be forged to send a HTTP GET request from the server itself to an arbitrary URL from the cookie.

First published: May 25, 2026Last modified: May 25, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, < 2.1.1CPE matchmatch criteria
cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*
3.0.0CPE matchmatch criteria
cpe:2.3:a:apache:shiro:3.0.0:alpha1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.1MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:D/RE:L/U:Green

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 43rd percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

mavenpatch availablevia ghsa
Product: org.apache.shiro:shiro-jakarta-eeFixed in: 2.2.0
mavenpatch availablevia ghsa
Product: org.apache.shiro:shiro-jakarta-eeFixed in: 3.0.0-alpha-2
apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (2)

mavenGHSA-wpqm-4gwx-w843medium

Apache Shiro Vulnerable to Open Redirect, Server-Side Request Forgery

May 26, 2026
apacheapache:www.mail-archive.com/[email protected]/msg11145.html

CVE-2026-44598: Apache Shiro Jakarta EE module: Open redirect and SSRF (requires valid credentials)

May 25, 2026

References

openwall.com / lists/oss-security/2026/05/25/8
Mailing ListThird Party Advisory
shiro.apache.org / security-reports.html
Vendor Advisory