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CVE-2026-13512

A vulnerability was identified in Databend up to 1.2.881 on HTTP. This affects the function ClientSessionManager::state_key of the file src/query/service/src/servers/http/v1/session/client_session_manager.rs of the component Tenant Handler. The manipulation leads to authorization bypass. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:505535f807cb4b50d207deb46992767b413d3f265663a6c8f505fde1df2a9573
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/3/cvssV2_0
cwe · 2 assertions

{"cweId":"CWE-285","description":"Improper Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-639","description":"Authorization Bypass","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:databend:databend:*:*:*:*:*:*:*:*"],"modules":["Tenant Handler"],"product":"Databend","vendor":"n/a","versions":[{"status":"affected","version":"1.2.881"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

2 source assertions
{"cweId":"CWE-285","description":"Improper Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-639","description":"Authorization Bypass","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["exploit","issue-tracking"],"url":"https://github.com/databendlabs/databend/issues/19930"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/references/4
{"tags":["issue-tracking","patch"],"url":"https://github.com/databendlabs/databend/pull/19931"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/references/5
{"name":"CVE-2026-13512 | CVE Analysis and Report","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-13512"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/references/2
{"name":"Submit #838874 | Databend Labs Databend main branch commit 21377cd76bb1e84f92bfc9da1acc881b8841f1de; affected versions unknown CWE-639 Authorization Bypass Through User-Controlled Key","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/838874"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/references/3
{"name":"VDB-374520 | Databend Tenant client_session_manager.rs state_key authorization","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/374520"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/references/0
{"name":"VDB-374520 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/374520/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e7480df74a762ae7a49724cd17e1ebedfab9b1c4eceaadaee22a1015fb030e · sha256:a4ed205acb21c85e… · /containers/cna/references/1

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.

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