CVE-2023-26091: The frp_form_answers (aka Forms Export) extension before 3.1.2, and 4.x before 4.0.2, for TYPO3 allows XSS via

Routine

MEDIUM 6.1UPGRADE

CVE-2023-26091 is a medium-severity flaw (CVSS 6.1) affecting forms export. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The frp_form_answers (aka Forms Export) extension before 3.1.2, and 4.x before 4.0.2, for TYPO3 allows XSS via saved emails.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-02-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: frappant

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-26 05:15 UTCPublished CVE record published
2026-06-17 05:42 UTCUpdated Record last modified

frappant forms export UPGRADE

Affected: < 3.1.2 · >= 4.0.0 and < 4.0.2

Fixed in: 3.1.2, 4.0.2

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy forms-export || rpm -q forms-export || forms-export --version

2. UPGRADE to 3.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade forms-export

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade forms-export

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 4.0.0 (Debian / Ubuntu)

apt-cache madison forms-export sudo apt install forms-export=<VERSION_BEFORE_4.0.0> sudo apt-mark hold forms-export

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

dnf --showduplicates list forms-export sudo dnf downgrade forms-export-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add forms-export

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-2023-26091?

forms export: upgrade to 3.1.2, 4.0.2. Exact commands for each OS are on this page.

Is CVE-2023-26091 being exploited?

CVE-2023-26091 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-2023-26091 affect?

CVE-2023-26091 affects forms export. Severity is medium (CVSS 6.1). The frp_form_answers (aka Forms Export) extension before 3.1.2, and 4.x before 4.0.2, for TYPO3 allows XSS via saved emails.

How urgent is CVE-2023-26091?

Priority 31/100. No elevated risk signals yet.

Software pages

TYPO3 vulnerabilities

References

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