CVE-2021-4315 json
NYUCCL psiTurk experiment.py special elements used in a template engine
published 2023-01-28 3 y ago modified 2026-06-17 4 mo ago also GHSA-9mq4-9556-6qxq , PYSEC-2023-43 , EUVD-2023-0210
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi psiturk 3.2.1
- psiturk psiturk 3.2.1
- github.com/NYUCCL/psiTurk@47787e1 commit
- github.com/NYUCCL/psiTurk#517 pull request
- github.com/NYUCCL/psiTurk/releases/tag/v3.2.1 release
Exploit prediction
0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/NYUCCL/psiTurk/pull/517 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| CNA | 3.0 | 5.5 | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| CNA | 2.0 | 5.2 | AV:A/AC:L/Au:S/C:P/I:P/A:P |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | psiturk | <3.2.1 |
3.2.1 |
Affected products
- NYUCCL psiTurk
Classification
References
-
github.com
/NYUCCL/psiTurk/pull/517
exploit, issue-tracking, web, evidence, patch
-
github.com
/NYUCCL/psiTurk/commit/47787e15cecd66f2aa87687bf852ae0194a4335f
patch, web
-
github.com
/NYUCCL/psiTurk/releases/tag/v3.2.1
patch, web, release-notes
-
vuldb.com
/?id.219676
vdb-entry, technical-description, web, permissions-required
-
vuldb.com
/?ctiid.219676
signature, permissions-required, web
-
nvd.nist.gov
/vuln/detail/CVE-2021-4315
advisory
-
github.com
/NYUCCL/psiTurk
package
-
github.com
/pypa/advisory-database/tree/main/vulns/psiturk/PYSEC-2023-43.yaml
web
-
github.com
/advisories/GHSA-9mq4-9556-6qxq
advisory
Sources
- CVE List CVE-2021-4315
- GitHub Advisory GHSA-9mq4-9556-6qxq
- NVD CVE-2021-4315
- OSV PYSEC-2023-43
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