CVE-2026-66776
An attacker with low privileges could send a specially crafted request that bypasses the integrity check and loads another user's session context.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under specific conditions. An attacker with low privileges could send a specially crafted request that bypasses the integrity check and loads another user's session context. Successful exploitation requires the attacker to have previously observed matching session values out-of-band, which makes the attack complex to execute. This could result in a high impact on confidentiality and a low impact on integrity. There is no impact on availability.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- sap/approuter
- Source
- cna@sap.com
References
- https://me.sap.com/notes/3786038Permissions Required
- https://url.sap/sapsecuritypatchdayVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.