CVE-2026-35173: Chyrp Lite is an ultra-lightweight blogging engine

Q: How do I fix CVE-2026-35173?

chyrp lite: upgrade to 2026.01. Exact commands for each OS are on this page.

Q: Is CVE-2026-35173 being exploited?

CVE-2026-35173 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-2026-35173 affect?

CVE-2026-35173 affects chyrp lite. Severity is medium (CVSS 6.5). Chyrp Lite is an ultra-lightweight blogging engine. Prior to 2026.01, an IDOR / Mass Assignment issue exists in the Post model that allows authenticated users with post editing permissions (Edit Post, Edit Draft, Edit Own Post, Edit Own Dra

Q: How urgent is CVE-2026-35173?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-35173 is a medium-severity flaw (CVSS 6.5) affecting chyrp lite. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Chyrp Lite is an ultra-lightweight blogging engine. Prior to 2026.01, an IDOR / Mass Assignment issue exists in the Post model that allows authenticated users with post editing permissions (Edit Post, Edit Draft, Edit Own Post, Edit Own Draft) to modify posts they do not own and do not have permission to edit. By passing internal class properties such as id into the post_attributes payload, an attacker can alter the object being instantiated. As

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-639, CWE-914
Published	2026-04-06
Last modified	2026-07-24

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

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-06 18:16 UTCPublished CVE record published
2026-07-24 21:10 UTCUpdated Record last modified

chyrplite chyrp lite UPGRADE

Affected: < 2026.01

Fixed in: 2026.01

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chyrp-lite || rpm -q chyrp-lite || chyrp-lite --version

2. UPGRADE to 2026.01 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chyrp-lite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chyrp-lite

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-2026-35173?

chyrp lite: upgrade to 2026.01. Exact commands for each OS are on this page.

Is CVE-2026-35173 being exploited?

CVE-2026-35173 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-2026-35173 affect?

CVE-2026-35173 affects chyrp lite. Severity is medium (CVSS 6.5). Chyrp Lite is an ultra-lightweight blogging engine. Prior to 2026.01, an IDOR / Mass Assignment issue exists in the Post model that allows authenticated users with post editing permissions (Edit Post, Edit Draft, Edit Own Post, Edit Own Dra

How urgent is CVE-2026-35173?

Priority 24/100. No elevated risk signals yet.

Related CVEs

CVE-2026-35174 CRITICAL 9.1 UPGRADE Chyrp Lite is an ultra-lightweight blogging engine

References

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