CVE-2026-29184Network attack vector

Session token disclosure via task-log redaction bypass

Published Mar 7, 2026 · Updated Mar 7, 2026

Sensitive-data exposure in Spotify Backstage before 3.1.4 allows remote authenticated users to read secrets from task event logs. The scaffolder backend's log-redaction path fails to remove secrets from task events emitted by malicious templates. Exploitation requires permission to register a catalog template and a victim who runs it; exposure is limited to secrets present in that task's logs.

CVSS severity2.0
Low
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data exposure in Spotify Backstage before 3.1.4 allows remote authenticated users to read secrets from task event logs. The scaffolder backend's log-redaction path fails to remove secrets from task events emitted by malicious templates. Exploitation requires permission to register a catalog template and a victim who runs it; exposure is limited to secrets present in that task's logs.

The record

CVE
CVE-2026-29184
Published
Mar 7, 2026
Updated
Mar 7, 2026
Vendor
Spotify
Product
Backstage
Classifications
CWE-532, T1552
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Spotify · Backstageversion=< 3.1.4

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
2.0GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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