ellite Wallos up to 4.9.5 OIDC Callback handle_oidc_callback.php curl_init server-side request forgery

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.54+

Summaryinfo

A vulnerability classified as problematic was found in ellite Wallos up to 4.9.5. This affects the function curl_init of the file includes/oidc/handle_oidc_callback.php of the component OIDC Callback Handler. Such manipulation leads to server-side request forgery. This vulnerability is referenced as CVE-2026-61640. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in ellite Wallos up to 4.9.5. Affected by this issue is the function curl_init of the file includes/oidc/handle_oidc_callback.php of the component OIDC Callback Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.6, Admin-configured OIDC token_url and user_info_url in includes/oidc/handle_oidc_callback.php:18-49 are used directly in curl_init() with zero SSRF filtering. Unlike logo/webhook URLs which have validate_webhook_url_for_ssrf(), OIDC URLs bypass all protections. Admin sets URL to http://169.254.169.254/latest/meta-data/ for cloud metadata access or internal network pivoting. This issue has been patched in version 4.9.6.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-61640 since 07/10/2026. The exploitation is known to be easy. The attack may be launched remotely. The exploitation requires an enhanced level of successful authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

By approaching the search of inurl:includes/oidc/handle_oidc_callback.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 4.9.6 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

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: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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
Google Hack: 🔒
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: Wallos 4.9.6

Timelineinfo

07/10/2026 CVE reserved
08/31/2026 +52 days Advisory disclosed
08/31/2026 +0 days VulDB entry created
08/31/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-61640 (🔒)
GCVE (CVE): GCVE-0-2026-61640
GCVE (VulDB): GCVE-100-397460

Entryinfo

Created: 08/31/2026 23:05
Changes: 08/31/2026 23:05 (69)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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