The "Submission Web Form" of Turnitin LTI tool/plugin version 1.3 is affected by HTML Injection attacks.

published 2023-06-29 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-38872

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

The "Submission Web Form" of Turnitin LTI tool/plugin version 1.3 is affected by HTML Injection attacks. The security issue affects the submission web form ("id" and "title" HTTP POST parameters) where the students submit their reports for similarity/plagiarism checks.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-27)

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/IthacaLabs/Turnitin/blob/main/Turnitin_LTI_1.3_HTMLi_CVE-2023-34831/Turnitin_LTI_1.3_HTMLi_CVE-2023-34831.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /IthacaLabs/Turnitin/blob/main/Turnitin_LTI_1.3_HTMLi_CVE-2023-34831/Turnitin_LTI_1.3_HTMLi_CVE-2023-34831.txt
exploit, vendor-advisory
github.com /IthacaLabs/Turnitin/blob/main/Turnitin_Submission_Web_Form/
broken-link

Sources

CVE List CVE-2023-34831
NVD CVE-2023-34831

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary