Nextcloud news up to 28.3.0-beta.0 Web Interface/API server-side request forgery

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Nextcloud news up to 28.3.0-beta.0. It has been classified as critical. This vulnerability affects unknown code of the component Web Interface/API. This manipulation causes server-side request forgery. The identification of this vulnerability is CVE-2026-44515. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Nextcloud news up to 28.3.0-beta.0. It has been declared as critical. Affected by this vulnerability is an unknown code block of the component Web Interface/API. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Nextcloud News is an RSS/Atom feed reader. Prior to 28.3.0-beta.1, Nextcloud News allows authenticated users to add feeds by providing a feed URL (via the web interface or the API). In affected versions, an authenticated attacker could provide a URL pointing to internal/private IP ranges or localhost, causing the Nextcloud server to perform server-side HTTP requests to attacker-controlled destinations, but not relaying the result. This enables blind SSRF, which can be used to scan or probe internal network services that are reachable from the Nextcloud server. This vulnerability is fixed in 28.3.0-beta.1.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-44515 since 05/06/2026. The exploitation appears to be difficult. The attack can be launched remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 28.3.0-beta.1 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: news 28.3.0-beta.1

Timelineinfo

05/06/2026 CVE reserved
05/14/2026 +8 days Advisory disclosed
05/14/2026 +0 days VulDB entry created
05/14/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-jcfr-rmj6-cpfj
Status: Confirmed

CVE: CVE-2026-44515 (🔒)
GCVE (CVE): GCVE-0-2026-44515
GCVE (VulDB): GCVE-100-363949

Entryinfo

Created: 05/14/2026 20:07
Changes: 05/14/2026 20:07 (69)
Complete: 🔍
Cache ID: 216::103

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