CVE-2026-76267

MEDIUM 4.3

Published 2026-10-07 · Last modified 2026-10-08

In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log. Splunk Enterprise versions 9.4.x are not affected.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 13th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

4.3CVSS 3.1 · MEDIUM

ConfidentialityNone
IntegrityLow
AvailabilityNone

What an attacker needs

✓Access: Reachable over the network — no local access needed
⚠Privileges: Requires a low-privilege account
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot: 2026-10-26T13:52:32.101Z

Affected

Vendors Splunk

Products Splunk Enterprise Splunk

Weakness (CWE)

CWE-117: The software does not neutralize or incorrectly neutralizes output that is written to logs.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Splunk	Splunk	≥ 10.0.0 and < 10.0.10
Splunk	Splunk	≥ 10.2.0 and < 10.2.7
Splunk	Splunk	≥ 10.4.0 and < 10.4.3

All CVSS metrics

MEDIUM 4.3 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
MEDIUM 4.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

Patches & mitigations

https://advisory.splunk.com/advisories/SVD-2026-1001 Vendor AdvisoryMitigationCVE record · cisco · Updated 2026-10-07T20:46:30.339Z
NVD · CVE-2026-76267 · Updated 2026-10-14T12:21:19.720

Advisories

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-94619 ADVISORYEUVD · EUVD-2026-94619

Sources: NVD · CVE.org · EPSS