CVE-2023-23816: Auth

Q: How do I fix CVE-2023-23816?

sitemap index: upgrade to newer than 1.2.3. Exact commands for each OS are on this page.

Q: Is CVE-2023-23816 being exploited?

CVE-2023-23816 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-2023-23816 affect?

CVE-2023-23816 affects sitemap index. Severity is medium (CVSS 5.9). Auth. (admin+) Cross-Site Scripting (XSS) vulnerability in Twardes Sitemap Index plugin <= 1.2.3 versions.

Q: How urgent is CVE-2023-23816?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 5.9UPGRADE

CVE-2023-23816 is a medium-severity flaw (CVSS 5.9) affecting sitemap index. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Auth. (admin+) Cross-Site Scripting (XSS) vulnerability in Twardes Sitemap Index plugin <= 1.2.3 versions.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-04-23
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: sitemap index project

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

Am I affected?

Timeline

2023-04-23 11:15 UTCPublished CVE record published
2026-06-17 05:38 UTCUpdated Record last modified

sitemap index project sitemap index UPGRADE

Affected: <= 1.2.3

Fixed in: newer than 1.2.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy sitemap-index || rpm -q sitemap-index || sitemap-index --version

2. UPGRADE to newer than 1.2.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sitemap-index

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sitemap-index

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-2023-23816?

sitemap index: upgrade to newer than 1.2.3. Exact commands for each OS are on this page.

Is CVE-2023-23816 being exploited?

CVE-2023-23816 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-2023-23816 affect?

CVE-2023-23816 affects sitemap index. Severity is medium (CVSS 5.9). Auth. (admin+) Cross-Site Scripting (XSS) vulnerability in Twardes Sitemap Index plugin <= 1.2.3 versions.

How urgent is CVE-2023-23816?

Priority 29/100. No elevated risk signals yet.

References

← Back to latest CVEs