# CVE-2026-119591: SQLite before 3.54.0 Stack Exhaustion via countOfViewOptimization() in VALUES Clause

Status: published. Published: 2026-10-30. Updated: 2026-11-04.

SQLite before 3.54.0 contains a stack exhaustion vulnerability in countOfViewOptimization() that allows attackers to crash the host process via count(*) over a large multi-row VALUES clause. Attackers supplying SQL or a database file with a crafted view can trigger deeply nested TK_PLUS expressions whose recursive freeing in sqlite3ExprDeleteNN() exhausts the C stack, causing denial of service.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://sqlite.org/src/info/ab621a3e11ee4acc
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/sqlite/sqlite/commit/eff50a067c55f972909e7780e506e91382d08de2
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: disclosure@vulncheck.com) — https://github.com/sqlite/sqlite/commit/eff50a067c55f972909e7780e506e91382d08de2

## Affected products and versions

- SQLite / SQLite (sqlite/sqlite): ≥ 0; < 3.54.0 (affected, custom). Source: CNA: VulnCheck

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:sqlite:sqlite:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "3.54.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 4.0: 6.8 (medium); CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H; source: CNA: VulnCheck

- CVSS 4.0: 6.8 (medium); CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.17% as of 2026-11-04; percentile 6.54%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-674

## Exploit evidence

- exploit: https://sqlite.org/bugs/info/2026-10-04T05:34:47Z (ADP: CISA-ADP)
- exploit: https://abraxaslabs.tech/research/sqlite-values-union (disclosure@vulncheck.com)

## References

- https://sqlite.org/bugs/info/2026-10-04T05:34:47Z (CNA: VulnCheck; issue-tracking)

- https://sqlite.org/src/info/ab621a3e11ee4acc (CNA: VulnCheck; patch)

- https://github.com/sqlite/sqlite/commit/eff50a067c55f972909e7780e506e91382d08de2 (CNA: VulnCheck; patch)

- https://github.com/sqlite/sqlite/blob/version-3.53.4/src/select.c#L7199 (CNA: VulnCheck; technical-description)

- https://sqlite.org/releaselog/3_54_0.html (CNA: VulnCheck; release-notes)

- https://abraxaslabs.tech/research/sqlite-values-union (CNA: VulnCheck; third-party-advisory)

- https://github.com/sqlite/sqlite (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/sqlite-before-3.54.0-stack-exhaustion-via-countofviewoptimization-in-values-clause (CNA: VulnCheck; third-party-advisory)

- https://sqlite.org/bugs/info/2026-10-04T05:34:47Z (ADP: CISA-ADP; exploit)

- https://abraxaslabs.tech/research/sqlite-values-union (disclosure@vulncheck.com; Exploit, Third Party Advisory)

- https://github.com/sqlite/sqlite (disclosure@vulncheck.com; Product)

- https://github.com/sqlite/sqlite/blob/version-3.53.4/src/select.c#L7199 (disclosure@vulncheck.com; Product)

- https://github.com/sqlite/sqlite/commit/eff50a067c55f972909e7780e506e91382d08de2 (disclosure@vulncheck.com; Patch)

- https://sqlite.org/bugs/info/2026-10-04T05:34:47Z (disclosure@vulncheck.com; Issue Tracking, Vendor Advisory)

- https://sqlite.org/releaselog/3_54_0.html (disclosure@vulncheck.com; Release Notes)

- https://sqlite.org/src/info/ab621a3e11ee4acc (disclosure@vulncheck.com; Vendor Advisory)

- https://www.vulncheck.com/advisories/sqlite-before-3.54.0-stack-exhaustion-via-countofviewoptimization-in-values-clause (disclosure@vulncheck.com; Third Party Advisory)

- https://sqlite.org/bugs/info/2026-10-04T05:34:47Z (134c704f-9b21-4f2e-91b3-4a467353bcc0; Issue Tracking, Vendor Advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-119591; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119591; retrieved 2026-11-05; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119591; retrieved 2026-11-04; source updated Not reported

Revision: 070e278efb74609baa155f1bbc7bf6dab8d8fd21b3cb2176c367410aabdbac11

Canonical: https://y2.dev/cve/CVE-2026-119591

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