CVE-2025-54815: Server-side template injection (SSTI) vulnerability in PPress 0.0.9 allows attackers to execute arbitrary code

This month

HIGH 8.8DOWNGRADE

CVE-2025-54815 is a high-severity flaw (CVSS 8.8) affecting ppress. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Server-side template injection (SSTI) vulnerability in PPress 0.0.9 allows attackers to execute arbitrary code via crafted themes.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-94
Published	2025-09-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: yandaozi

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

Am I affected?

Timeline

2025-09-19 20:15 UTCPublished CVE record published
2026-06-17 09:40 UTCUpdated Record last modified

yandaozi ppress DOWNGRADE

Affected: 0.0.9 beta

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.0.9 (Debian / Ubuntu)

apt-cache madison ppress sudo apt install ppress=<VERSION_BEFORE_0.0.9> sudo apt-mark hold ppress

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ppress sudo dnf downgrade ppress-<VERSION_BEFORE_0.0.9> sudo dnf versionlock add ppress

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-2025-54815?

ppress: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-54815 being exploited?

CVE-2025-54815 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-2025-54815 affect?

CVE-2025-54815 affects ppress. Severity is high (CVSS 8.8). Server-side template injection (SSTI) vulnerability in PPress 0.0.9 allows attackers to execute arbitrary code via crafted themes.

How urgent is CVE-2025-54815?

Priority 48/100. High severity; Public exploit reference

Related CVEs

CVE-2025-54761 HIGH 8.0 DOWNGRADE An issue was discovered in PPress 0.0.9 allowing attackers to gain escilated privlidges via crafted session co
CVE-2025-52159 HIGH 8.8 DOWNGRADE Hardcoded credentials in default configuration of PPress 0.0.9.
CVE-2025-25973 MEDIUM 6.5 DOWNGRADE A stored Cross Site Scripting vulnerability in the "related recommendations" feature in Ppress v.0.0.9 allows

References

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