CVE-2026-23929
Prototype pollution leading to stored XSS
Description
Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain.
INFO
Published Date :
Aug. 18, 2026, 1:17 p.m.
Last Modified :
Aug. 19, 2026, 4:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 72de3e22-0555-4a0d-ae81-9249e0f0a1e8 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Filter dangerous properties like __proto__ from search parameters.
- Avoid unsafe element creation methods.
- Update jQuery to a version that addresses this issue.
- Validate and sanitize all user-provided input.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23929.
| URL | Resource |
|---|---|
| https://support.zabbix.com/browse/ZBX-28068 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23929 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23929
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23929 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23929 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 19, 2026
Action Type Old Value New Value Changed SSVC {'id': 'CVE-2026-23929', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-18T12:51:58.456783Z'} {'id': 'CVE-2026-23929', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-18T00:00:00+00:00'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 18, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-23929', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-18T12:51:58.456783Z'} -
New CVE Received by [email protected]
Aug. 18, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.zabbix.com/', 'vendor': 'Zabbix', 'modules': ['Frontend'], 'product': 'Zabbix', 'versions': [{'status': 'affected', 'changes': [{'at': '6.0.46', 'status': 'unaffected'}], 'version': '6.0.44', 'versionType': 'git', 'lessThanOrEqual': '6.0.45'}, {'status': 'affected', 'changes': [{'at': '7.0.25', 'status': 'unaffected'}], 'version': '7.0.22', 'versionType': 'git', 'lessThanOrEqual': '7.0.24'}, {'status': 'affected', 'changes': [{'at': '7.4.9', 'status': 'unaffected'}], 'version': '7.4.6', 'versionType': 'git', 'lessThanOrEqual': '7.4.8'}], 'defaultStatus': 'unknown'}] Added Description Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-1321 Added Reference https://support.zabbix.com/browse/ZBX-28068