HOMEVULNERABILITIESCVE-2021-4261
CRITICAL

CVE-2021-4261

CWE-707Published: December 19, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A vulnerability classified as critical has been found in pacman-canvas up to 1.0.5. Affected is the function addHighscore of the file data/db-handler.php. The manipulation leads to sql injection. It is possible to launch the attack remotely. Upgrading to version 1.0.6 is able to address this issue. The name of the patch is 29522c90ca1cebfce6453a5af5a45281d99b0646. It is recommended to upgrade the affected component. VDB-216270 is the identifier assigned to this vulnerability.

NVD Source

Technical Analysis

CVE-2021-4261 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

pacman-canvas_project1 product(s)
pacman-canvas
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/platzhersh/pacman-canvas/commit/29522c90ca1cebfce6453a5af5a45281d99b0646
PATCHhttps://github.com/platzhersh/pacman-canvas/commit/29522c90ca1cebfce6453a5af5a45281d99b0646
ADVISORYhttps://github.com/platzhersh/pacman-canvas/releases/tag/1.0.6
ADVISORYhttps://vuldb.com/?id.216270
ADVISORYhttps://github.com/platzhersh/pacman-canvas/releases/tag/1.0.6
ADVISORYhttps://vuldb.com/?id.216270

All References (6)

→
https://github.com/platzhersh/pacman-canvas/commit/29522c90ca1cebfce6453a5af5a45281d99b0646Patch · Third Party Advisory
→
https://github.com/platzhersh/pacman-canvas/releases/tag/1.0.6Release Notes · Third Party Advisory
→
https://vuldb.com/?id.216270Third Party Advisory
→
https://github.com/platzhersh/pacman-canvas/commit/29522c90ca1cebfce6453a5af5a45281d99b0646Patch · Third Party Advisory
→
https://github.com/platzhersh/pacman-canvas/releases/tag/1.0.6Release Notes · Third Party Advisory
→
https://vuldb.com/?id.216270Third Party Advisory

Quick Facts

CVE IDCVE-2021-4261
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-707
CISA KEVNo
Affected1 vendor(s)
PublishedDec 19, 2022

Related CVEs (CWE-707)

CVE-2022-3956
9.8
CVE-2022-3972
9.8
CVE-2022-3955
9.8
CVE-2022-3948
9.8
CVE-2022-3947
9.8
CVE-2022-3973
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-4261 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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