CVE Explorer
CVE-2026-49139
Nanobot prior to version 0.2.1 contains a server-side request forgery vulnerability in the Microsoft Teams channel handler that allows remote attackers to exfiltrate Bot Framework bearer tokens by supplying a forged activity with an attacker-controlled serviceUrl value. Attackers can poison the stored conversation reference by sending a crafted inbound activity to the Teams webhook, causing subsequent bot replies to transmit token-bearing Authorization header requests to an attacker-controlled h
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"affected","packageURL":"pkg:github/HKUDS/nanobot","product":"nanobot","repo":"https://github.com/HKUDS/nanobot","vendor":"HKUDS","versions":[{"lessThan":"0.2.1","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:fc07efc8221d98f6b59528faff5c8efaff2652e4aef1550e0c1181286a7bfba2 · sha256:200bfcc2a2bdc24b… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:fc07efc8221d98f6b59528faff5c8efaff2652e4aef1550e0c1181286a7bfba2 · sha256:200bfcc2a2bdc24b… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-918","description":"Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:fc07efc8221d98f6b59528faff5c8efaff2652e4aef1550e0c1181286a7bfba2 · sha256:200bfcc2a2bdc24b… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"tags":["patch"],"url":"https://github.com/HKUDS/nanobot/commit/232df45126bcf0f8fccd123d73714f202c8e8612"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fc07efc8221d98f6b59528faff5c8efaff2652e4aef1550e0c1181286a7bfba2 · sha256:200bfcc2a2bdc24b… · /containers/cna/references/2
{"tags":["issue-tracking"],"url":"https://github.com/HKUDS/nanobot/pull/4047"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fc07efc8221d98f6b59528faff5c8efaff2652e4aef1550e0c1181286a7bfba2 · sha256:200bfcc2a2bdc24b… · /containers/cna/references/1
{"tags":["release-notes"],"url":"https://github.com/HKUDS/nanobot/releases/tag/v0.2.1"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fc07efc8221d98f6b59528faff5c8efaff2652e4aef1550e0c1181286a7bfba2 · sha256:200bfcc2a2bdc24b… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/nanobot-ssrf-via-microsoft-teams-channel-serviceurl-poisoning"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fc07efc8221d98f6b59528faff5c8efaff2652e4aef1550e0c1181286a7bfba2 · sha256:200bfcc2a2bdc24b… · /containers/cna/references/3
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.