VDB-359154 · CVE-2026-39087 · EUVD-2026-25232

Via Code up to 2.20 ntfy.sh parseActions regular expression without anchors

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Via Code up to 2.20. This issue affects the function parseActions of the file ntfy.sh. The manipulation results in Remote Privilege Escalation. This vulnerability is cataloged as CVE-2026-39087. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Via Code up to 2.20. Affected is the function parseActions of the file ntfy.sh. The manipulation with an unknown input leads to a remote privilege escalation vulnerability. CWE is classifying the issue as CWE-777. The product uses a regular expression to perform neutralization, but the regular expression is not anchored and may allow malicious or malformed data to slip through. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

ntfy before 2.22.0 allows SSRF because of an unanchored regular expression for web push endpoint URLs.

This vulnerability is traded as CVE-2026-39087 since 04/06/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit.

Upgrading to version 2.21 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25232). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Code

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.4
CNA Vector (MITRE): 🔒

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Regular expression without anchors
CWE: CWE-777 / CWE-184 / CWE-183
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Code 2.21

Timelineinfo

04/06/2026 CVE reserved
04/23/2026 +17 days Advisory disclosed
04/23/2026 +0 days VulDB entry created
07/04/2026 +72 days VulDB entry last update

Sourcesinfo

Status: Confirmed

CVE: CVE-2026-39087 (🔒)
GCVE (CVE): GCVE-0-2026-39087
GCVE (VulDB): GCVE-100-359154
EUVD: 🔒

Entryinfo

Created: 04/23/2026 18:17
Updated: 07/04/2026 21:16
Changes: 04/23/2026 18:17 (53), 04/23/2026 19:44 (1), 07/04/2026 21:16 (22)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.