An issue was discovered in Snowbridge setups sending data to Google Tag Manager Server Side.

published 2025-04-03 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-54496

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

An issue was discovered in Snowbridge setups sending data to Google Tag Manager Server Side. It involves attaching an invalid GTM SS preview header to events, causing them to be retried indefinitely. As a result, the performance of forwarding events to GTM SS overall can be affected (latency, throughput).

Patch / fix

links 1

support.snowplow.io/hc/en-us/articles/26318139354909-Update-Critical-Snowplow-… advisory

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 19 mo ago (2025-04-07)

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness

CWE-703 Improper Check or Handling of Exceptional Conditions

References

support.snowplow.io /hc/en-us/articles/26318139354909-Update-Critical-Snowplow-Security-Updates-Impact-on-Open-Source-Software-Use
patch, vendor-advisory

Sources

CVE List CVE-2024-47215
NVD CVE-2024-47215

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