CVE-2020-36649
mholt PapaParse papaparse.js redos
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
mholt PapaParse papaparse.js redos
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
CVE-2020-36649- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - CVSS 3.0
- 3.5 Low
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - CVSS 2.0
- 2.3
AV:A/AC:M/Au:S/C:N/I:N/A:P - Weakness
- CWE-1333
- Updated
- 2026-11-02
EUVDEUVD-2023-0378
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
EUVD-2023-0378- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-798h-g4j5-5537
Duplicate Advisory: PapaParse Inefficient Regular Expression Complexity vulnerability
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-qvjc-g5vr-mfgr. This link is maintained to preserve external references.
Original Description
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
GHSA-798h-g4j5-5537- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1333
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qvjc-g5vr-mfgr
Regular Expression Denial of Service in papaparse
Versions of papaparse prior to 5.2.0 are vulnerable to Regular Expression Denial of Service (ReDos). The parse function contains a malformed regular expression that takes exponentially longer to process non-numerical inputs. This allows attackers to stall systems and lead to Denial of Service.
Recommendation
Upgrade to version 5.2.0 or later.
- Record
GHSA-qvjc-g5vr-mfgr- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-185
- Updated
- 2026-11-02
NVD
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
CVE-2020-36649- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 2.3 Low
AV:A/AC:M/Au:S/C:N/I:N/A:P - Weakness
- CWE-1333
- Updated
- 2026-11-02
OSV
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
CVE-2020-36649- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 5 moreShow less
OSVDEBIAN-CVE-2020-36649
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
DEBIAN-CVE-2020-36649- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-798h-g4j5-5537
Duplicate Advisory: PapaParse Inefficient Regular Expression Complexity vulnerability
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-qvjc-g5vr-mfgr. This link is maintained to preserve external references.
Original Description
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
GHSA-798h-g4j5-5537- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1333
- Updated
- 2026-11-02
OSVGHSA-qvjc-g5vr-mfgr
Regular Expression Denial of Service in papaparse
Versions of papaparse prior to 5.2.0 are vulnerable to Regular Expression Denial of Service (ReDos). The parse function contains a malformed regular expression that takes exponentially longer to process non-numerical inputs. This allows attackers to stall systems and lead to Denial of Service.
Recommendation
Upgrade to version 5.2.0 or later.
- Record
GHSA-qvjc-g5vr-mfgr- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-185
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-36649
A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.
- Record
UBUNTU-CVE-2020-36649- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVMGASA-2023-0204 No score
Updated mediawiki packages fix security vulnerability
Bundled PapaParse copy in VisualEditor has known ReDos (CVE-2020-36649).
An issue was discovered in MediaWiki before 1.35.9. When installing with a pre-existing data directory that has weak permissions, the SQLite files are created with file mode 0644, i.e., world readable to local users. These files include credentials data (CVE-2022-47927).
An issue was discovered in MediaWiki before 1.35.9. SpecialMobileHistory allows remote attackers to cause a denial of service because database queries are slow (CVE-2023-22909).
An issue was discovered in MediaWiki before 1.35.9. E-Widgets does widget replacement in HTML attributes, which can lead to XSS, because widget authors often do not expect that their widget is executed in an HTML attribute context (CVE-2023-22911).
An issue was discovered in MediaWiki before 1.35.10. An auto-block can occur for an untrusted X-Forwarded-For header (CVE-2023-29141).
OATHAuth allows replay attacks when MediaWiki is configured without ObjectCache; Insecure Default Configuration (T330086).
- Record
MGASA-2023-0204- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
papaparsenpm |
before 5.2.0 | 5.2.0 |
mediawikiDebian:12 |
before 1:1.39.4-1~deb12u1, plus listed versions 1:1.39.2-1 |
1:1.39.4-1~deb12u1 |
mediawikiDebian:13 |
before 1:1.39.4-1 | 1:1.39.4-1 |
mediawikiDebian:14 |
before 1:1.39.4-1 | 1:1.39.4-1 |
mediawikiMageia:8 From an advisory covering 5 CVEs |
before 1.35.10-1.mga8 | 1.35.10-1.mga8 |
mediawikiUbuntu:18.04:LTS |
All versions, plus listed versions 1:1.27.3-11:1.27.4-11:1.27.4-21:1.27.4-3 |
None known |
mediawikiUbuntu:Pro:20.04:LTS |
All versions, plus listed versions 1:1.31.2-1ubuntu11:1.31.5-11:1.31.5-1ubuntu11:1.31.5-21:1.31.5-3 Show 4 moreShow less1:1.31.5-3ubuntu11:1.31.6-11:1.31.7-11:1.31.7-1ubuntu0.1~esm1 |
None known |
mediawikiUbuntu:Pro:22.04:LTS |
All versions, plus listed versions 1:1.35.3-11:1.35.4-11:1.35.5-11:1.35.5-1ubuntu11:1.35.5-1ubuntu21:1.35.5-1ubuntu31:1.35.6-11:1.35.6-1ubuntu0.1~esm1 |
None known |
mediawikiUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 1:1.39.4-21:1.39.5-11:1.39.6-11:1.39.7-11:1.39.7-1ubuntu0.1~esm1 |
None known |
mediawikiUbuntu:25.10 |
All versions, plus listed versions 1:1.43.1+dfsg-11:1.43.1+dfsg-21:1.43.3+dfsg-1 |
None known |
mediawikiUbuntu:26.10 |
All versions, plus listed versions 1:1.43.8+dfsg-21:1.43.9+dfsg-11:1.43.9+dfsg-1ubuntu1 |
None known |
mediawikiUbuntu:26.04:LTS |
All versions, plus listed versions 1:1.43.3+dfsg-11:1.43.5+dfsg-11:1.43.6+dfsg-21:1.43.8+dfsg-11:1.43.8+dfsg-2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected | ||
| affected, aliases, references | EUVD | |
| first indexed | GitHub Advisories, OSV | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-36649 is a low vulnerability (CVSS 3.5) in Mholt Papaparse, published September 4, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. Fixed in papaparse 5.2.0.
References
vuldb.com?id.218004
github.com/mholt/PapaParse/issues/777
Show 15 moreShow less
nvd.nist.gov/vuln/detail/CVE-2020-36649
snyk.io/vuln/SNYK-JS-PAPAPARSE-564258
security-tracker.debian.org/tracker/CVE-2020-36649
advisories.mageia.org/MGASA-2023-0204.html
bugs.mageia.org/show_bug.cgi?id=31463
lists.wikimedia.org/hyperkitty/list/[email protected]/message/UEMW64LVEH3BEXCJV43CVS6XPYURKWU3
lists.fedoraproject.org/archives/list/[email protected]/thread/AP65YEN762IBNQPOYGUVLTQIDLM5XD2A
ubuntu.com/security/CVE-2020-36649
phabricator.wikimedia.org/T326946
cve.org/CVERecord?id=CVE-2020-36649