CVE-2019-25102 json
simple-markdown simple-markdown.js redos
published 2023-02-12 3 y ago modified 2026-06-17 4 mo ago also GHSA-j533-2g8v-pmpg , EUVD-2023-0728
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
A vulnerability, which was classified as problematic, was found in simple-markdown 0.6.0. Affected is an unknown function of the file simple-markdown.js. The manipulation with the input <<<<<<<<<<:/:/:/:/:/:/:/:/:/:/ leads to inefficient regular expression complexity. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.1 is able to address this issue. The patch is identified as 015a719bf5cdc561feea05500ecb3274ef609cd2. It is recommended to upgrade the affected component. VDB-220638 is the identifier assigned to this vulnerability.
Patch / fix
- npm simple-markdown 0.6.1
Exploit prediction
1.10% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/ariabuckles/simple-markdown/pull/73 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| CNA | 3.0 | 4.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| CNA | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | simple-markdown | <0.6.1 |
0.6.1 |
Affected products
- n/a simple-markdown
Classification
- Weakness
-
- CWE-1333 Inefficient Regular Expression Complexity
References
-
github.com
/ariabuckles/simple-markdown/pull/73
exploit, issue-tracking, web, patch
-
github.com
/ariabuckles/simple-markdown/commit/015a719bf5cdc561feea05500ecb3274ef609cd2
patch, web
-
github.com
/ariabuckles/simple-markdown/releases/tag/0.6.1
patch, web, release-notes
-
vuldb.com
/?id.220638
vdb-entry, technical-description, web, permissions-required, third-party-advisory
-
vuldb.com
/?ctiid.220638
signature, permissions-required, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-25102
advisory
-
github.com
/ariabuckles/simple-markdown
package
Sources
- CVE List CVE-2019-25102
- GitHub Advisory GHSA-j533-2g8v-pmpg
- NVD CVE-2019-25102
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.