CVE-2026-39276: The template upload feature in Emlog Pro v2.6.9 has a path traversal vulnerability, allowing authenticated adm

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HIGH 7.2DOWNGRADE

CVE-2026-39276 is a high-severity flaw (CVSS 7.2) affecting emlog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The template upload feature in Emlog Pro v2.6.9 has a path traversal vulnerability, allowing authenticated administrators to execute arbitrary PHP code. By uploading a malicious ZIP archive containing directory traversal sequences in filenames, an attacker can overwrite default template files or directly include malicious code files in the current template.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-05-29
Last modified	2026-07-21

Publisher (CNA): MITRE · Vendor: emlog

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-29 16:16 UTCPublished CVE record published
2026-07-21 15:10 UTCUpdated Record last modified

emlog emlog DOWNGRADE

Affected: 2.6.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.6.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.6.9 (Debian / Ubuntu)

apt-cache madison emlog sudo apt install emlog=<VERSION_BEFORE_2.6.9> sudo apt-mark hold emlog

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

dnf --showduplicates list emlog sudo dnf downgrade emlog-<VERSION_BEFORE_2.6.9> sudo dnf versionlock add emlog

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-2026-39276?

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

Is CVE-2026-39276 being exploited?

CVE-2026-39276 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-2026-39276 affect?

CVE-2026-39276 affects emlog. Severity is high (CVSS 7.2). The template upload feature in Emlog Pro v2.6.9 has a path traversal vulnerability, allowing authenticated administrators to execute arbitrary PHP code. By uploading a malicious ZIP archive containing directory traversal sequences in filena

How urgent is CVE-2026-39276?

Priority 44/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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