CVE-2017-7251: A Cross-Site Scripting (XSS) was discovered in pi-engine/pi 2.5.0

Q: How do I fix CVE-2017-7251?

pi: upgrade to newer than 2.5.0. Exact commands for each OS are on this page.

Q: Is CVE-2017-7251 being exploited?

CVE-2017-7251 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-2017-7251 affect?

CVE-2017-7251 affects pi. Severity is medium (CVSS 6.1). A Cross-Site Scripting (XSS) was discovered in pi-engine/pi 2.5.0. The vulnerability exists due to insufficient filtration of user-supplied data (preview) passed to the "pi-develop/www/script/editor/markitup/preview/markdown.php" URL. An at

Q: How urgent is CVE-2017-7251?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2017-7251 is a medium-severity flaw (CVSS 6.1) affecting pi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross-Site Scripting (XSS) was discovered in pi-engine/pi 2.5.0. The vulnerability exists due to insufficient filtration of user-supplied data (preview) passed to the "pi-develop/www/script/editor/markitup/preview/markdown.php" URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.

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	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-03-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: piengine

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

Am I affected?

Timeline

2017-03-23 22:59 UTCPublished CVE record published
2026-06-17 01:23 UTCUpdated Record last modified

piengine pi UPGRADE

Affected: <= 2.5.0

Fixed in: newer than 2.5.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.5.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pi

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-2017-7251?

pi: upgrade to newer than 2.5.0. Exact commands for each OS are on this page.

Is CVE-2017-7251 being exploited?

CVE-2017-7251 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-2017-7251 affect?

CVE-2017-7251 affects pi. Severity is medium (CVSS 6.1). A Cross-Site Scripting (XSS) was discovered in pi-engine/pi 2.5.0. The vulnerability exists due to insufficient filtration of user-supplied data (preview) passed to the "pi-develop/www/script/editor/markitup/preview/markdown.php" URL. An at

How urgent is CVE-2017-7251?

Priority 37/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

References

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