CVE Explorer

CVE-2026-6637

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database. A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column. In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update. Vers

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:129df6b40abb11bc459276646742cfdf49fd66111eb826a78ad574982917a9c9

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-89","description":"Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:29c4fc70f8cb0b96465bc5ba1bf9dfa5021ecb9e1f26cc9416c802ceb42d8431 · sha256:ced4979c9ff60015… · /containers/cna/problemTypes/0/descriptions/1

{"cweId":"CWE-121","description":"Stack-based Buffer Overflow","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:29c4fc70f8cb0b96465bc5ba1bf9dfa5021ecb9e1f26cc9416c802ceb42d8431 · sha256:ced4979c9ff60015… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"PostgreSQL","vendor":"n/a","versions":[{"lessThan":"18.4","status":"affected","version":"18","versionType":"rpm"},{"lessThan":"17.10","status":"affected","version":"17","versionType":"rpm"},{"lessThan":"16.14","status":"affected","version":"16","versionType":"rpm"},{"lessThan":"15.18","status":"affected","version":"15","versionType":"rpm"},{"lessThan":"14.23","status":"affected","version":"0","versionType":"rpm"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:29c4fc70f8cb0b96465bc5ba1bf9dfa5021ecb9e1f26cc9416c802ceb42d8431 · sha256:ced4979c9ff60015… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:29c4fc70f8cb0b96465bc5ba1bf9dfa5021ecb9e1f26cc9416c802ceb42d8431 · sha256:ced4979c9ff60015… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-89","description":"Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:29c4fc70f8cb0b96465bc5ba1bf9dfa5021ecb9e1f26cc9416c802ceb42d8431 · sha256:ced4979c9ff60015… · /containers/cna/problemTypes/0/descriptions/1

{"cweId":"CWE-121","description":"Stack-based Buffer Overflow","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:29c4fc70f8cb0b96465bc5ba1bf9dfa5021ecb9e1f26cc9416c802ceb42d8431 · sha256:ced4979c9ff60015… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"url":"https://www.postgresql.org/support/security/CVE-2026-6637/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:29c4fc70f8cb0b96465bc5ba1bf9dfa5021ecb9e1f26cc9416c802ceb42d8431 · sha256:ced4979c9ff60015… · /containers/cna/references/0

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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