CVE-2026-76983: Improper neutralization of input during web page generation in Apache Wicket. The <wicket:label> tag is provi

Routine

MEDIUM 5.4WATCHLISTUPGRADE

CVE-2026-76983 is a medium-severity flaw (CVSS 5.4) affecting wicket. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper neutralization of input during web page generation in Apache Wicket. The <wicket:label> tag is provided by org.apache.wicket.markup.html.form.AutoLabelTextResolver, which is registered by default in every WebApplication. The resolver writes the label it finds into the markup as it is, and reads no escaping setting at all, so markup in a label is rendered as markup. When the label comes from the labelled component's label model, set thr

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-08-31
Last modified	2026-09-01

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

Last updated 2026-09-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-31 12:17 UTCPublished CVE record published
2026-09-01 18:07 UTCUpdated Record last modified

apache wicket UPGRADE

Affected: >= 8.0.0 and < 8.19.0 · >= 9.0.0 and < 9.24.0 · >= 10.0.0 and < 10.11.0

Fixed in: 8.19.0, 9.24.0, 10.11.0

Safe to downgrade to: a release before 8.0.0

1. Check installed version

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

2. UPGRADE to 8.19.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wicket

Note

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

3. If no update is available yet, DOWNGRADE to a release before 8.0.0 (Debian / Ubuntu)

apt-cache madison wicket sudo apt install wicket=<VERSION_BEFORE_8.0.0> sudo apt-mark hold wicket

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list wicket sudo dnf downgrade wicket-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add wicket

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2026-76983?

wicket: upgrade to 8.19.0, 9.24.0, 10.11.0. Exact commands for each OS are on this page.

Is CVE-2026-76983 being exploited?

CVE-2026-76983 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-2026-76983 affect?

CVE-2026-76983 affects wicket. Severity is medium (CVSS 5.4). Improper neutralization of input during web page generation in Apache Wicket. The <wicket:label> tag is provided by org.apache.wicket.markup.html.form.AutoLabelTextResolver, which is registered by default in every WebApplication. The resol

How urgent is CVE-2026-76983?

Priority 35/100. On your watchlist

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References

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