CVE-2025-27566: Path traversal vulnerability exists in a-blog cms versions prior to Ver

Routine

LOW 3.8UPGRADE

CVE-2025-27566 is a low-severity flaw (CVSS 3.8) affecting a-blog cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Path traversal vulnerability exists in a-blog cms versions prior to Ver. 3.1.43 and versions prior to Ver. 3.0.47. This is an issue with insufficient path validation in the backup feature, and exploitation requires the administrator privilege. If this vulnerability is exploited, a remote authenticated attacker with the administrator privilege may obtain or delete any file on the server.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.8 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.5% (top 58%)
CISA exploited list	No
Weakness	CWE-22
Published	2025-05-19
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2025-05-19 09:15 UTCPublished CVE record published
2026-06-17 09:03 UTCUpdated Record last modified

appleple a-blog cms UPGRADE

Affected: >= 3.0.0 and < 3.0.47 · >= 3.1.0 and < 3.1.43

Fixed in: 3.0.47, 3.1.43

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy a-blog-cms || rpm -q a-blog-cms || a-blog-cms --version

2. UPGRADE to 3.0.47 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade a-blog-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade a-blog-cms

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 3.0.0 (Debian / Ubuntu)

apt-cache madison a-blog-cms sudo apt install a-blog-cms=<VERSION_BEFORE_3.0.0> sudo apt-mark hold a-blog-cms

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

dnf --showduplicates list a-blog-cms sudo dnf downgrade a-blog-cms-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add a-blog-cms

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-2025-27566?

a-blog cms: upgrade to 3.0.47, 3.1.43. Exact commands for each OS are on this page.

Is CVE-2025-27566 being exploited?

CVE-2025-27566 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-2025-27566 affect?

CVE-2025-27566 affects a-blog cms. Severity is low (CVSS 3.8). Path traversal vulnerability exists in a-blog cms versions prior to Ver. 3.1.43 and versions prior to Ver. 3.0.47. This is an issue with insufficient path validation in the backup feature, and exploitation requires the administrator privile

How urgent is CVE-2025-27566?

Priority 24/100. No elevated risk signals yet.

Related CVEs

CVE-2025-41429 MEDIUM 4.8 UPGRADE a-blog cms multiple versions neutralize logs improperly
CVE-2025-36560 HIGH 8.6 UPGRADE Server-side request forgery vulnerability exists in a-blog cms multiple versions
CVE-2025-32999 MEDIUM 5.4 UPGRADE Cross-site scripting vulnerability exists in a-blog cms versions prior to Ver
CVE-2025-31103 HIGH 7.5 UPGRADE Untrusted data deserialization vulnerability exists in a-blog cms
CVE-2024-31396 MEDIUM 6.6 UPGRADE Code injection vulnerability exists in a-blog cms Ver.3.1.x series versions prior to Ver.3.1.12 and Ver.3.0.x

References

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