CVE-2026-28813: Apache JSPWiki, up to 2.12.3, is vulnerable to JSON Hijacking, which leads to csrf vulnerabilities. Users are

Q: How do I fix CVE-2026-28813?

jspwiki: upgrade to 2.12.4. Exact commands for each OS are on this page.

Q: Is CVE-2026-28813 being exploited?

CVE-2026-28813 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-28813 affect?

CVE-2026-28813 affects jspwiki. Severity is high (CVSS 8.8). Apache JSPWiki, up to 2.12.3, is vulnerable to JSON Hijacking, which leads to csrf vulnerabilities. Users are recommended to upgrade to version 2.12.4, which fixes this issue.

Q: How urgent is CVE-2026-28813?

Priority 40/100. High severity; On your watchlist

This month

HIGH 8.8WATCHLISTUPGRADE

CVE-2026-28813 is a high-severity flaw (CVSS 8.8) affecting jspwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Apache JSPWiki, up to 2.12.3, is vulnerable to JSON Hijacking, which leads to csrf vulnerabilities. Users are recommended to upgrade to version 2.12.4, which fixes this issue.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-352
Published	2026-07-30
Last modified	2026-10-23

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-30 16:17 UTCPublished CVE record published
2026-10-23 22:10 UTCUpdated Record last modified

apache jspwiki UPGRADE

Affected: < 2.12.4

Fixed in: 2.12.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy jspwiki || rpm -q jspwiki || jspwiki --version

2. UPGRADE to 2.12.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jspwiki

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jspwiki

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · ntpd-rs · FIXED · 1.7.2-3.eln159 · FEDORA-2026-57e4a99310 · source

sudo dnf upgrade --advisory=FEDORA-2026-57e4a99310

Fedora 46 · moby-engine · FIXED · 29.9.2-2.fc46 · FEDORA-2026-4856be87b3 · source

sudo dnf upgrade --advisory=FEDORA-2026-4856be87b3

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28813?

jspwiki: upgrade to 2.12.4. Exact commands for each OS are on this page.

Is CVE-2026-28813 being exploited?

CVE-2026-28813 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28813 affect?

CVE-2026-28813 affects jspwiki. Severity is high (CVSS 8.8). Apache JSPWiki, up to 2.12.3, is vulnerable to JSON Hijacking, which leads to csrf vulnerabilities. Users are recommended to upgrade to version 2.12.4, which fixes this issue.

How urgent is CVE-2026-28813?

Priority 40/100. High severity; On your watchlist

Related CVEs

CVE-2026-28812 CRITICAL 9.8 UPGRADE UserManager lack of checks allows impersonation in Apache JSPWiki up to 2.12.3 which may allow attackers to es
CVE-2026-28811 HIGH 7.5 UPGRADE Debug Messages Revealing Unnecessary Information in Apache JSPWiki up to 2.12.3. Users are recommended to upgr
CVE-2026-28814 HIGH 7.5 UPGRADE Arbitrary Wiki Markup rendering due to lack of authentication in Apache JSPWiki up to 2.12.3 allows attacker t
CVE-2026-48910 MEDIUM 6.5 UPGRADE A carefully crafted editing request could trigger an XSS vulnerability on Apache JSPWiki when parsing errors

References

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