CVE-2023-41330: knplabs/knp-snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page.

Q: How do I fix CVE-2023-41330?

snappy: upgrade to 1.4.3. Exact commands for each OS are on this page.

Q: Is CVE-2023-41330 being exploited?

CVE-2023-41330 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-2023-41330 affect?

CVE-2023-41330 affects snappy. Severity is critical (CVSS 9.8). knplabs/knp-snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. ## Issue On March 17th the vulnerability CVE-2023-28115 was disclosed, allowing an attacker to gain remote code execution through

Q: How urgent is CVE-2023-41330?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-41330 is a critical-severity flaw (CVSS 9.8) affecting snappy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

knplabs/knp-snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. ## Issue On March 17th the vulnerability CVE-2023-28115 was disclosed, allowing an attacker to gain remote code execution through PHAR deserialization. Version 1.4.2 added a check `if (\strpos($filename, 'phar://') === 0)` in the `prepareOutput` function to resolve this CVE, however if the user is able to control the second parameter of

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-502
Published	2023-09-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: knplabs

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

Am I affected?

Timeline

2023-09-06 18:15 UTCPublished CVE record published
2026-06-17 06:21 UTCUpdated Record last modified

knplabs snappy UPGRADE

Affected: < 1.4.3

Fixed in: 1.4.3

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.4.3 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade snappy

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-2023-41330?

snappy: upgrade to 1.4.3. Exact commands for each OS are on this page.

Is CVE-2023-41330 being exploited?

CVE-2023-41330 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-2023-41330 affect?

CVE-2023-41330 affects snappy. Severity is critical (CVSS 9.8). knplabs/knp-snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. ## Issue On March 17th the vulnerability CVE-2023-28115 was disclosed, allowing an attacker to gain remote code execution through

How urgent is CVE-2023-41330?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-36124 MEDIUM 5.3 UPGRADE iq80 Snappy is a compression/decompression library

References

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