CVE-2026-2102: wrensec-commons contains a reflected cross-site scripting (XSS) vulnerability in the CREST framework's HTTP bi

Routine

MEDIUM 6.1UPGRADE

CVE-2026-2102 is a medium-severity flaw (CVSS 6.1) affecting wrensec-commons. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

wrensec-commons contains a reflected cross-site scripting (XSS) vulnerability in the CREST framework's HTTP binding. The HttpUtils.prepareResponse() method used the _mimeType request parameter to set the Content-Type response header without proper sanitization. By sending a GET request with _mimeType=text/html, an attacker could cause the browser to interpret a CREST JSON response as HTML, enabling execution of arbitrary JavaScript in the victim'

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-79
Published	2026-11-02
Last modified	2026-11-02

Publisher (CNA): WrenSecurity · Vendor: wren security · Source: CVE Program record (NVD analysis pending)

Last updated 2026-11-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-11-02 15:26 UTCPublished CVE record published
2026-11-02 15:26 UTCUpdated Record last modified

wren security wrensec-commons UPGRADE

Affected: < 22.6.2 · >= 23.0.0-M1 and < 23.0.0

Fixed in: 22.6.2, 23.0.0

Safe to downgrade to: a release before 23.0.0-M1

1. Check installed version

apt-cache policy wrensec-commons || rpm -q wrensec-commons || wrensec-commons --version

2. UPGRADE to 22.6.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wrensec-commons

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wrensec-commons

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 23.0.0-M1 (Debian / Ubuntu)

apt-cache madison wrensec-commons sudo apt install wrensec-commons=<VERSION_BEFORE_23.0.0-M1> sudo apt-mark hold wrensec-commons

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

dnf --showduplicates list wrensec-commons sudo dnf downgrade wrensec-commons-<VERSION_BEFORE_23.0.0-M1> sudo dnf versionlock add wrensec-commons

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.

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-2102 | Wren Security wrensec-commons up to 22.6.1/22.x HTTP Binding HttpUtils.prepareResponse _mimeType cross site scripting 2026-11-02

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-2026-2102?

wrensec-commons: upgrade to 22.6.2, 23.0.0. Exact commands for each OS are on this page.

Is CVE-2026-2102 being exploited?

CVE-2026-2102 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-2026-2102 affect?

CVE-2026-2102 affects wrensec-commons. Severity is medium (CVSS 6.1). wrensec-commons contains a reflected cross-site scripting (XSS) vulnerability in the CREST framework's HTTP binding. The HttpUtils.prepareResponse() method used the _mimeType request parameter to set the Content-Type response header without

How urgent is CVE-2026-2102?

Priority 21/100. No elevated risk signals yet.

References

← Back to latest CVEs