7.5

CVE-2024-52797: apereo opencast

CVSS: 7.5v3.1HighModified
AliasesGHSA-jh6x-7xfg-9cq2
Published 21-11-2024Last modified 28-10-2025
Open JSON

Vulnerability summary

CVE-2024-52797 is a high (CVSS 7.5) vulnerability in apereo opencast. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 59.7% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.92%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 21-11-2024
    PublishedVulnerability first disclosed.
  2. 28-10-2025
    Last modifiedVulnerability information updated.

Description

Opencast is free and open source software for automated video capture and distribution. First noticed in Opencast 13 and 14, Opencast's Elasticsearch integration may generate syntactically invalid Elasticsearch queries in relation to previously acceptable search queries. From Opencast version 11.4 and newer, Elasticsearch queries are retried a configurable number of times in the case of error to handle temporary losses of connection to Elasticsearch. These invalid queries would fail, causing the retry mechanism to begin requerying with the same syntactically invalid query immediately, in an infinite loop. This causes a massive increase in log size which can in some cases cause a denial of service due to disk exhaustion. Opencast 13.10 and Opencast 14.3 contain patches which address the base issue, with Opencast 16.7 containing changes which harmonize the search behaviour between the admin UI and external API. Users are strongly recommended to upgrade as soon as possible if running versions prior to 13.10 or 14.3. While the relevant endpoints require (by default) `ROLE_ADMIN` or `ROLE_API_SERIES_VIEW`, the problem queries are otherwise innocuous. This issue could be easily triggered by normal administrative work on an affected Opencast system. Those who run a version newer than 13.10 and 14.3 and see different results when searching in their admin UI vs your external API or LMS, may resolve the issue by upgrading to 16.7. No known workarounds for the vulnerability are available.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.92%

Chance of exploitation in the next 30 days

Percentile

60%

Versus all other CVEs

30-day change

0.00 pp

From 0.92% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.92%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apereo1 product
  • opencast≥ 11.4, < 13.10 | ≥ 14.0, < 14.3 | ≥ 15.0, < 16.7
Opencast1 product
  • opencast≥ 11.4, < 13.10 | ≥ 14.0, < 14.3 | ≥ 15.0, < 16.7
Org.opencastproject1 product
  • opencast-elasticsearch-impl≥ 11.4, < 13.10 | ≥ 14.0, < 14.3 | ≥ 15.0, < 16.7

3 vendors · 3 products

References

7 links