How severe is CVE-2026-28814?

CVE-2026-28814 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-28814 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28814?

CVE-2026-28814 affects Apache Jspwiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28814?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-28814 published?

CVE-2026-28814 was published on 2026-07-30 and last updated on 2026-08-05.

CVE-2026-28814

CVE-2026-28814 is a high-severity vulnerability in Apache Jspwiki with a CVSS 3.x base score of 7.5. 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-306.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Apache Jspwiki
Published: 2026-07-30
Last modified: 2026-08-05

Description

Arbitrary Wiki Markup rendering due to lack of authentication in Apache JSPWiki up to 2.12.3 allows attacker to obtain sensitive data stored in JSPWiki variables. Users are recommended to upgrade to version 2.12.4 or 3.0.0, which fixes this issue.

Frequently asked questions

What is CVE-2026-28814?: Arbitrary Wiki Markup rendering due to lack of authentication in Apache JSPWiki up to 2.12.3 allows attacker to obtain sensitive data stored in JSPWiki variables. Users are recommended to upgrade to version 2.12.4 or 3.0.0, which fixes this issue.
How severe is CVE-2026-28814?: CVE-2026-28814 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-28814 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28814?: CVE-2026-28814 affects Apache Jspwiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28814?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-28814 published?: CVE-2026-28814 was published on 2026-07-30 and last updated on 2026-08-05.

References

Affected products (1)

cpe:2.3:a:apache:jspwiki:*:*:*:*:*:*:*:*

More vulnerabilities in Apache Jspwiki

CVE-2026-28812 — Critical (CVSS 9.8): UserManager lack of checks allows impersonation in Apache JSPWiki up to 2.12.3 which may allow attackers to escalate…
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CVE-2022-34158 — High (CVSS 8.8): A carefully crafted invocation on the Image plugin could trigger an CSRF vulnerability on Apache JSPWiki before 2.11.3,…
CVE-2022-24947 — High (CVSS 8.8): Apache JSPWiki user preferences form is vulnerable to CSRF attacks, which can lead to account takeover. Apache JSPWiki…
CVE-2026-28811 — High (CVSS 7.5): Debug Messages Revealing Unnecessary Information in Apache JSPWiki up to 2.12.3. Users are recommended to upgrade to…

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