Apache Shiro: Shiro's native session and rememberMe cookies do not have secure flag set by default

published 2026-05-25 5 mo ago modified 2026-07-24 3 mo ago also GHSA-c6r4-qjmw-cvj2 , EUVD-2026-31734

cvss: 6.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

Default configurations of Apache Shiro send sensitive cookies in HTTPS session without 'Secure' attribute.

This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1.

Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue.

In the affected versions, Shiro-native session manager, as well as Remember-Me manager sends JSESSIONID and rememberMe cookies without 'secure' attribute by default.

Patch / fix

fixed in 2

maven org.apache.shiro:shiro-web 2.2.0, 3.0.0-alpha-2
apache shiro 2.1.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-43828 updated 2026-10-30 cvss 6.5

apache-shiro: Apache Shiro: Information disclosure via insecure cookie handling

Red Hat Fuse 7 shiro-web
affected: no fix planned “Out of support scope”
Red Hat JBoss Enterprise Application Platform Expansion Pack shiro-web
affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-26)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.9	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y/R:U/RE:L/U:Amber
CNA	4.0	5.9	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/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:X/AU:Y/R:U/V:X/RE:L/U:Amber
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
maven	org.apache.shiro:shiro-web	>=1.0.0-incubating, <2.2.0 >=3.0.0-alpha-1, <3.0.0-alpha-2	2.2.0 3.0.0-alpha-2

Affected products

Apache Software Foundation Apache Shiro

Classification

Weakness

CWE-614 Sensitive Cookie in HTTPS Session Without 'Secure' Attribute

References

shiro.apache.org /security-reports.html#cve_2026_43828
vendor-advisory, web
openwall.com /lists/oss-security/2026/05/25/7
web, mailing-list, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2026-43828
advisory
github.com /apache/shiro
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary