HOMEVULNERABILITIESCVE-2026-39845
MEDIUM

CVE-2026-39845

CWE-918Published: April 15, 2026· Updated: Apr 21, 2026

4.1
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.7th

Official Description

Weblate is a web based localization tool. In versions prior to 5.17, the webhook add-on did not utilize existing SSRF protections. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable the webhook add-on as a workaround.

NVD Source

Technical Analysis

CVE-2026-39845 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeChanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

Affected Vendors & Products

weblate1 product
weblate
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/WeblateOrg/weblate/pull/18815
ADVISORYhttps://github.com/WeblateOrg/weblate/security/advisories/GHSA-f8hv-g549-hwg2

All References (2)

→
https://github.com/WeblateOrg/weblate/pull/18815Issue Tracking · Patch
→
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-f8hv-g549-hwg2Third Party Advisory

Quick Facts

CVE IDCVE-2026-39845
CVSS Score4.1 / 10
SeverityMEDIUM
WeaknessCWE-918
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedApr 15, 2026

Related CVEs (CWE-918)

CVE-2026-26150
10.0
CVE-2026-26138
10.0
CVE-2026-32871
10.0
CVE-2026-35431
10.0
CVE-2026-32169
10.0
CVE-2026-13773
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-39845 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2026-39845·NVD