CVE-2022-27637: Reflected cross-site scripting vulnerability in PukiWiki versions 1.5.1 to 1.5.3 allows a remote attacker to i

Routine

MEDIUM 6.1UPGRADE

CVE-2022-27637 is a medium-severity flaw (CVSS 6.1) affecting pukiwiki. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reflected cross-site scripting vulnerability in PukiWiki versions 1.5.1 to 1.5.3 allows a remote attacker to inject an arbitrary script via unspecified vectors.

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	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-08-23
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: pukiwiki

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

Am I affected?

Timeline

2022-08-23 07:15 UTCPublished CVE record published
2026-06-17 04:37 UTCUpdated Record last modified

pukiwiki pukiwiki UPGRADE

Affected: >= 1.5.1 and < 1.5.4

Fixed in: 1.5.4

Safe to downgrade to: a release before 1.5.1

1. Check installed version

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

2. UPGRADE to 1.5.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pukiwiki

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 1.5.1 (Debian / Ubuntu)

apt-cache madison pukiwiki sudo apt install pukiwiki=<VERSION_BEFORE_1.5.1> sudo apt-mark hold pukiwiki

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

dnf --showduplicates list pukiwiki sudo dnf downgrade pukiwiki-<VERSION_BEFORE_1.5.1> sudo dnf versionlock add pukiwiki

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-2022-27637?

pukiwiki: upgrade to 1.5.4. Exact commands for each OS are on this page.

Is CVE-2022-27637 being exploited?

CVE-2022-27637 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-2022-27637 affect?

CVE-2022-27637 affects pukiwiki. Severity is medium (CVSS 6.1). Reflected cross-site scripting vulnerability in PukiWiki versions 1.5.1 to 1.5.3 allows a remote attacker to inject an arbitrary script via unspecified vectors.

How urgent is CVE-2022-27637?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2022-36350 MEDIUM 5.4 UPGRADE Stored cross-site scripting vulnerability in PukiWiki versions 1.3.1 to 1.5.3 allows a remote attacker to inje
CVE-2022-34486 HIGH 7.2 UPGRADE Path traversal vulnerability in PukiWiki versions 1.4.5 to 1.5.3 allows a remote authenticated attacker with a

References

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