How severe is CVE-2026-34607?

CVE-2026-34607 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-34607 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34607?

CVE-2026-34607 affects Emlog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34607?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34607 have an EU (EUVD) identifier?

Yes. CVE-2026-34607 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18901.

When was CVE-2026-34607 published?

CVE-2026-34607 was published on 2026-04-03 and last updated on 2026-06-17.

CVE-2026-34607

CVE-2026-34607 is a high-severity vulnerability in Emlog with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18901
Weakness: CWE-22
Affected product: Emlog
Published: 2026-04-03
Last modified: 2026-06-17

Description

Emlog is an open source website building system. In versions 2.6.2 and prior, a path traversal vulnerability exists in the emUnZip() function (include/lib/common.php:793). When extracting ZIP archives (plugin/template uploads, backup imports), the function calls $zip->extractTo($path) without sanitizing ZIP entry names. An authenticated admin can upload a crafted ZIP containing entries with ../ sequences to write arbitrary files to the server filesystem, including PHP webshells, achieving Remote Code Execution (RCE). At time of publication, there are no publicly available patches.

Frequently asked questions

What is CVE-2026-34607?: Emlog is an open source website building system. In versions 2.6.2 and prior, a path traversal vulnerability exists in the emUnZip() function (include/lib/common.php:793). When extracting ZIP archives (plugin/template uploads, backup imports), the function calls $zip->extractTo($path) without sanitizing ZIP entry names. An authenticated admin can upload a crafted ZIP containing entries with ../ sequences to write arbitrary files to the server filesystem, including PHP webshells, achieving Remote Code Execution (RCE). At time of publication, there are no publicly available patches.
How severe is CVE-2026-34607?: CVE-2026-34607 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-34607 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34607?: CVE-2026-34607 affects Emlog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34607?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34607 have an EU (EUVD) identifier?: Yes. CVE-2026-34607 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18901.
When was CVE-2026-34607 published?: CVE-2026-34607 was published on 2026-04-03 and last updated on 2026-06-17.

References

https://github.com/emlog/emlog/security/advisories/GHSA-2jg8-rmhm-xv9m

Affected products (1)

cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:*

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