CVE-2026-48910: A carefully crafted editing request could trigger an XSS vulnerability on Apache JSPWiki when parsing errors

Q: How do I fix CVE-2026-48910?

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

Q: Is CVE-2026-48910 being exploited?

CVE-2026-48910 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-2026-48910 affect?

CVE-2026-48910 affects jspwiki. Severity is medium (CVSS 6.5). A carefully crafted editing request could trigger an XSS vulnerability on Apache JSPWiki when parsing errors on the markdown renderer, which could allow the attacker to execute javascript in the victim's browser and get some sensitive in

Q: How urgent is CVE-2026-48910?

Priority 39/100. On your watchlist

Routine

MEDIUM 6.5WATCHLISTUPGRADE

CVE-2026-48910 is a medium-severity flaw (CVSS 6.5) affecting jspwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A carefully crafted editing request could trigger an XSS vulnerability on Apache JSPWiki when parsing errors on the markdown renderer, which could allow the attacker to execute javascript in the victim's browser and get some sensitive information about the victim. This issue affects Apache JSPWiki: through 2.12.3. Users are recommended to upgrade to version 2.12.4, which fixes the issue.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-80
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-2026-48910?

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

Is CVE-2026-48910 being exploited?

CVE-2026-48910 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-2026-48910 affect?

CVE-2026-48910 affects jspwiki. Severity is medium (CVSS 6.5). A carefully crafted editing request could trigger an XSS vulnerability on Apache JSPWiki when parsing errors on the markdown renderer, which could allow the attacker to execute javascript in the victim's browser and get some sensitive in

How urgent is CVE-2026-48910?

Priority 39/100. On your watchlist

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References

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