6.5
MEDIUM
CVE-2023-26920
Fast-XML-Parser Prototype Pollution Vulnerability
Description

fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.

INFO

Published Date :

Dec. 12, 2023, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 7:52 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2023-26920 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-26920 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Naturalintelligence fast_xml_parser

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).

A centralized repository of standalone security patches for open source libraries.

appsec backport cve devsecops fix hotfix open-source patch protection remediation seal security update upgrade vulnerability

Updated: 10 months ago
182 stars 0 fork 0 watcher
Born at : July 30, 2023, 4:46 p.m. This repo has been linked 265 different CVEs too.

CLI to get a list of GitHub repos with open security alerts

JavaScript

Updated: 2 months, 3 weeks ago
1 stars 1 fork 1 watcher
Born at : July 31, 2020, 8:05 p.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-26920 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-26920 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7
    Added Reference https://github.com/advisories/GHSA-793h-6f7r-6qvm
    Added Reference https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Dec. 14, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7 No Types Assigned https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7 Exploit
    Changed Reference Type https://github.com/advisories/GHSA-793h-6f7r-6qvm No Types Assigned https://github.com/advisories/GHSA-793h-6f7r-6qvm Third Party Advisory
    Changed Reference Type https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804 No Types Assigned https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804 Patch
    Added CWE NIST CWE-1321
    Added CPE Configuration OR *cpe:2.3:a:naturalintelligence:fast_xml_parser:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.2
  • CVE Received by [email protected]

    Dec. 12, 2023

    Action Type Old Value New Value
    Added Description fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
    Added Reference MITRE https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7 [No types assigned]
    Added Reference MITRE https://github.com/advisories/GHSA-793h-6f7r-6qvm [No types assigned]
    Added Reference MITRE https://github.com/NaturalIntelligence/fast-xml-parser/commit/2b032a4f799c63d83991e4f992f1c68e4dd05804 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-26920 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.17 }} -0.14%

score

0.38583

percentile

CVSS31 - Vulnerability Scoring System
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Latest DB Update: Apr. 28, 2025 23:27