CVE-2023-39926: Unauth

Q: How do I fix CVE-2023-39926?

under construction \/ maintenance mode: upgrade to newer than 2.6. Exact commands for each OS are on this page.

Q: Is CVE-2023-39926 being exploited?

CVE-2023-39926 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-2023-39926 affect?

CVE-2023-39926 affects under construction \/ maintenance mode. Severity is high (CVSS 7.1). Unauth. Stored Cross-Site Scripting (XSS) vulnerability in Acurax Under Construction / Maintenance Mode from Acurax plugin <= 2.6 versions.

Routine

HIGH 7.1UPGRADE

CVE-2023-39926 is a high-severity flaw (CVSS 7.1) affecting under construction \/ maintenance mode. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unauth. Stored Cross-Site Scripting (XSS) vulnerability in Acurax Under Construction / Maintenance Mode from Acurax plugin <= 2.6 versions.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-11-16
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: acurax

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

Am I affected?

Timeline

2023-11-16 20:15 UTCPublished CVE record published
2026-06-17 06:12 UTCUpdated Record last modified

acurax under construction \/ maintenance mode UPGRADE

Affected: <= 2.6

Fixed in: newer than 2.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy under-construction--maintenance-mode || rpm -q under-construction--maintenance-mode || under-construction--maintenance-mode --version

2. UPGRADE to newer than 2.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade under-construction--maintenance-mode

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade under-construction--maintenance-mode

Note

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

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-2023-39926?

under construction \/ maintenance mode: upgrade to newer than 2.6. Exact commands for each OS are on this page.

Is CVE-2023-39926 being exploited?

CVE-2023-39926 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-2023-39926 affect?

CVE-2023-39926 affects under construction \/ maintenance mode. Severity is high (CVSS 7.1). Unauth. Stored Cross-Site Scripting (XSS) vulnerability in Acurax Under Construction / Maintenance Mode from Acurax plugin <= 2.6 versions.

How urgent is CVE-2023-39926?

Priority 34/100. High severity

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References

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