by Kastro
Paper/Archive/CVE-2026-111692

CVE-2026-111692

databufflabs databuff — DataBuff ai-apm-web through 0.1.10 Authentication Bypass via Hardcoded HMAC Secret

EPSS 0.6%public exploitCVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 48.9.489 × 209.8Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

DataBuff ai-apm-web through 0.1.10 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge admin session tokens by using the hardcoded HMAC secret in JwtTokenService. Attackers can sign a payload of admin and a future expiry with the default dev-secret to gain full administrative access to protected /webapi routes, including the Doris SQL query API.

Affected

ProductAffectedFixed inSource
databuff≤ 0.1.10–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploithackmd.io/@hieuPenguinnn/databuff-default-jwt-secret-auth-bypasswriteupgithub.com/databufflabs/databuff/blob/v0.1.10/ai-apm-web/src/main/resources/application.yml#L54-L59writeupgithub.com/databufflabs/databuff/blob/v0.1.10/ai-apm-web/src/main/java/com/databuff/apm/web/config/JwtProperties.java#L8-L15writeupgithub.com/databufflabs/databuff/blob/v0.1.10/ai-apm-web/src/main/java/com/databuff/apm/web/auth/JwtTokenService.java#L36-L60refgithub.com/databufflabs/databuffwriteupvulncheck.com/advisories/databuff-ai-apm-web-through-0.1.10-authentication-bypass-via-hardcoded-hmac-secret