tarojs taro index.js redos

published 2025-06-09 17 mo ago modified 2026-06-17 4 mo ago also GHSA-f5xg-cfpj-2mw6 , EUVD-2025-17580

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

A vulnerability was found in tarojs taro up to 4.1.1. It has been declared as problematic. This vulnerability affects unknown code of the file taro/packages/css-to-react-native/src/index.js. The manipulation leads to inefficient regular expression complexity. The attack can be initiated remotely. Upgrading to version 4.1.2 is able to address this issue. The name of the patch is c2e321a8b6fc873427c466c69f41ed0b5e8814bf. It is recommended to upgrade the affected component.

Patch / fix

fixed in 2 links 3

npm taro-css-to-react-native 4.1.2
taro taro 4.1.2

github.com/NervJS/taro@c2e321a commit
github.com/NervJS/taro#17619 pull request
github.com/NervJS/taro/releases/tag/v4.1.2 release

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 16 mo ago (2025-06-10)

Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/NervJS/taro/pull/17619 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
CNA	3.0	4.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P/E:ND/RL:OF/RC:C
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P
GitHub	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem	package	affected	fixed in
npm	taro-css-to-react-native	<4.1.2	4.1.2

Affected products

tarojs taro

Classification

Weakness

CWE-1333 Inefficient Regular Expression Complexity
CWE-400 Uncontrolled Resource Consumption

References

github.com /NervJS/taro/pull/17619
issue-tracking, exploit, web, patch
github.com /NervJS/taro/commit/c2e321a8b6fc873427c466c69f41ed0b5e8814bf
patch, web
github.com /NervJS/taro/releases/tag/v4.1.2
patch, web, release-notes
vuldb.com /?id.311668
vdb-entry, web, third-party-advisory
vuldb.com /?ctiid.311668
signature, permissions-required, web, vdb-entry
vuldb.com /?submit.585796
third-party-advisory, web, vdb-entry
nvd.nist.gov /vuln/detail/CVE-2025-5896
advisory
github.com /NervJS/taro
package

Sources

CVE List CVE-2025-5896
GitHub Advisory GHSA-f5xg-cfpj-2mw6
NVD CVE-2025-5896

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary