CVE-2021-4315

Name: CVE-2021-4315
Creator: NVD / NIST
Published: 2023-01-28T23:15:08.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2021-4315 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Psiturk	Psiturk	< 3.2.1

References

https://github.com/NYUCCL/psiTurk/commit/47787e15cecd66f2aa87687bf852ae0194a4335fPatch
https://github.com/NYUCCL/psiTurk/pull/517Issue Tracking
https://github.com/NYUCCL/psiTurk/releases/tag/v3.2.1Release Notes
https://vuldb.com/?ctiid.219676Permissions Required
https://vuldb.com/?id.219676Permissions Required
https://github.com/NYUCCL/psiTurk/commit/47787e15cecd66f2aa87687bf852ae0194a4335fPatch
https://github.com/NYUCCL/psiTurk/pull/517Issue Tracking
https://github.com/NYUCCL/psiTurk/releases/tag/v3.2.1Release Notes
https://vuldb.com/?ctiid.219676Permissions Required
https://vuldb.com/?id.219676Permissions Required

Timeline

Published: Jan 28, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4315?

How severe is CVE-2021-4315?

CVE-2021-4315 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4315?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4315?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST