CVE-2026-5160 | yuin goldmark up to 1.7.16 URL Validation cross site scripting

VDB-357669 · CVE-2026-5160 · GCVE-0-2026-5160 YUIN GOLDMARK UP TO 1.7.16 URL VALIDATION CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 2.26+ Summaryinfo A vulnerability marked as problematic has been reported in yuin goldmark up to 1.7.16. This issue affects some unknown processing of the component URL Validation Handler. Performing a manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2026-5160. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component. Detailsinfo A vulnerability classified as problematic has been found in yuin goldmark up to 1.7.16. This affects an unknown code of the component URL Validation Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is: Versions of the package github.com/yuin/goldmark/renderer/html before 1.7.17 are vulnerable to Cross-site Scripting (XSS) due to improper ordering of URL validation and normalization. The renderer validates link destinations using a prefix-based check (IsDangerousURL) before resolving HTML entities. This allows an attacker to bypass protocol filtering by encoding dangerous schemes using HTML5 named character references. For example, a payload such as javascript:alert(1) is not recognized as dangerous during validation, leading to arbitrary script execution in the context of applications that render the URL. The advisory is shared at security.snyk.io. This vulnerability is uniquely identified as CVE-2026-5160 since 03/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue. Upgrading to version 1.7.17 eliminates this vulnerability. Productinfo Vendor yuin Name goldmark Version 1.7.0 1.7.1 1.7.2 1.7.3 1.7.4 1.7.5 1.7.6 1.7.7 1.7.8 1.7.9 1.7.10 1.7.11 1.7.12 1.7.13 1.7.14 1.7.15 1.7.16 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: 5.2 VulDB Meta Temp Score: 5.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 6.1 CNA Vector (snyk): 🔒 CVSSv2info 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: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined 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: goldmark 1.7.17 Timelineinfo 03/30/2026 CVE reserved 04/15/2026 +16 days Advisory disclosed 04/15/2026 +0 days VulDB entry created 04/15/2026 +0 days VulDB entry last update Sourcesinfo Advisory: SNYK-GOLANG-GITHUBCOMYUINGOLDMARKRENDERERHTML-15838406 Status: Confirmed CVE: CVE-2026-5160 (🔒) GCVE (CVE): GCVE-0-2026-5160 GCVE (VulDB): GCVE-100-357669 Entryinfo Created: 04/15/2026 07:51 Changes: 04/15/2026 07:51 (77) Complete: 🔍 Cache ID: 99:0EF:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸