How severe is CVE-2026-43828?

CVE-2026-43828 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-43828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-43828?

CVE-2026-43828 primarily affects Apache Shiro. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-43828?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-43828 have an EU (EUVD) identifier?

Yes. CVE-2026-43828 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31734.

When was CVE-2026-43828 published?

CVE-2026-43828 was published on 2026-05-25 and last updated on 2026-06-17.

CVE-2026-43828

CVE-2026-43828 is a medium-severity vulnerability in Apache Shiro with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-614.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 5.9
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31734
Weakness: CWE-614
Affected product: Apache Shiro
Published: 2026-05-25
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-43828?: 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.
How severe is CVE-2026-43828?: CVE-2026-43828 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-43828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-43828?: CVE-2026-43828 primarily affects Apache Shiro. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-43828?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-43828 have an EU (EUVD) identifier?: Yes. CVE-2026-43828 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31734.
When was CVE-2026-43828 published?: CVE-2026-43828 was published on 2026-05-25 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:shiro:3.0.0:alpha1:*:*:*:*:*:*

More vulnerabilities in Apache Shiro

CVE-2023-34478 — Critical (CVSS 9.8): Apache Shiro, before 1.12.0 or 2.0.0-alpha-3, may be susceptible to a path traversal attack that results in an…
CVE-2022-40664 — Critical (CVSS 9.8): Apache Shiro before 1.10.0, Authentication Bypass Vulnerability in Shiro when forwarding or including via…
CVE-2022-32532 — Critical (CVSS 9.8): Apache Shiro before 1.9.1, A RegexRequestMatcher can be misconfigured to be bypassed on some servlet containers.…
CVE-2021-41303 — Critical (CVSS 9.8): Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an…
CVE-2020-17523 — Critical (CVSS 9.8): Apache Shiro before 1.7.1, when using Apache Shiro with Spring, a specially crafted HTTP request may cause an…
CVE-2020-17510 — Critical (CVSS 9.8): Apache Shiro before 1.7.0, when using Apache Shiro with Spring, a specially crafted HTTP request may cause an…

All CVEs affecting Apache Shiro →

Other CWE-614 vulnerabilities

CVE-2025-8037 — Critical (CVSS 9.1): Setting a nameless cookie with an equals sign in the value shadowed other cookies. Even if the nameless cookie was set…
CVE-2026-53661 — High (CVSS 8.8): Boruta is a standalone authorization server that aims to implement OAuth 2.0 and Openid Connect up to decentralized…
CVE-2026-46398 — High (CVSS 8.8): HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 25.0.0 and prior to version…
CVE-2025-53757 — High (CVSS 8.7): This vulnerability exists in Digisol DG-GR6821AC Router due to misconfiguration of both Secure and HttpOnly flags on…
CVE-2025-0479 — High (CVSS 8.6): This vulnerability exists in the CP Plus Router due to insecure handling of cookie flags used within its web interface.…
CVE-2024-2493 — High (CVSS 7.5): Session Hijacking vulnerability in Hitachi Ops Center Analyzer.This issue affects Hitachi Ops Center Analyzer: from…

Browse all CWE-614 vulnerabilities →