🛡️ CVE-2021-4315 — psiturk

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-1336 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

NYUCCL psiTurk IS vulnerable to Improper Neutralization of Special Elements

A vulnerability has been found in NYUCCL psiTurk up to 3.2.0 and classified as critical. This vulnerability affects unknown code of the file psiturk/experiment.py. The manipulation of the argument mode leads to improper neutralization of special elements used in a template engine. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.1 is able to address this issue. The name of the patch is 47787e15cecd66f2aa87687bf852ae0194a4335f. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-219676.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2021-4315 is recorded against 1 package.

  • psiturk (fixed in 3.2.1)

Timeline and source

Published on 29 January 2023 and last revised on 10 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
github.com (Web)
github.com (Web)
vuldb.com (Web)
vuldb.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE CWE-1336
Public Exploit ✅ No
Source OSV
Published 2023-01-29
Updated 2026-08-12
Modified 2026-06-10

Affected Packages

Software From version Fixed in
psiturk 3.2.1

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