CVE-2026-70634

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read in the Dictionary compression reverse row iterator (tsl/src/compression/algorithms/dictionary.c). The forward path validates the decoded index; the reverse path uses an assertion compiled out of release builds, leaving the 64-bit Simple8b index unvalidated and the read offset attacker-controlled. Attackers with DML access to a physical compressed relation can store a crafted datum and run a reverse-order scan. With a pass-by-value column type the out-of-bounds Datum is returned to the client as a normal column value, disclosing backend memory including the shared buffer pool, which SQL access control does not cover.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
github_commit

commit 517c13e7cc6a (timescale/timescaledb)

Fix landed in timescale/timescaledb commit 517c13e7cc6a — awaiting tagged release

https://github.com/timescale/timescaledb/commit/517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3
github_pr

Fix crashes with malformed compressed data

Fix merged in timescale/timescaledb PR #10360 on 2026-08-03 — awaiting tagged release

https://github.com/timescale/timescaledb/pull/10360

Vendor Advisories for CVE-2026-70634(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 30× in last 7d / 63× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 22:32 UTCGHSA enrichment
  3. 2026-08-20 10:07 UTCGHSA enrichment
  4. 2026-08-19 21:42 UTCEG score recompute
  5. 2026-08-19 21:42 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 09:16 UTCGHSA enrichment
  8. 2026-08-18 20:51 UTCEG score recompute
  9. 2026-08-18 20:51 UTCGHSA enrichment
  10. 2026-08-18 13:49 UTCEPSS rescore
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 08:26 UTCGHSA enrichment
  13. 2026-08-17 19:50 UTCEG score recompute
  14. 2026-08-17 19:50 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 07:24 UTCGHSA enrichment
  17. 2026-08-16 18:59 UTCEG score recompute
  18. 2026-08-16 18:59 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 06:26 UTCEG score recompute
  22. 2026-08-16 06:26 UTCGHSA enrichment
  23. 2026-08-16 02:15 UTCEPSS rescore
  24. 2026-08-15 18:01 UTCGHSA enrichment
  25. 2026-08-15 05:36 UTCEG score recompute
Show 38 more
  1. 2026-08-15 05:36 UTCGHSA enrichment
  2. 2026-08-15 01:31 UTCEPSS rescore
  3. 2026-08-14 17:10 UTCEG score recompute
  4. 2026-08-14 17:10 UTCGHSA enrichment
  5. 2026-08-14 11:57 UTCGHSA enrichment
  6. 2026-08-13 23:32 UTCEG score recompute
  7. 2026-08-13 23:32 UTCGHSA enrichment
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-13 11:04 UTCGHSA enrichment
  10. 2026-08-12 22:39 UTCEG score recompute
  11. 2026-08-12 22:39 UTCGHSA enrichment
  12. 2026-08-12 13:51 UTCEPSS rescore
  13. 2026-08-12 10:14 UTCGHSA enrichment
  14. 2026-08-11 21:48 UTCEG score recompute
  15. 2026-08-11 21:48 UTCGHSA enrichment
  16. 2026-08-11 09:23 UTCEG score recompute
  17. 2026-08-11 09:23 UTCGHSA enrichment
  18. 2026-08-11 00:00 UTCEPSS rescore
  19. 2026-08-10 20:58 UTCGHSA enrichment
  20. 2026-08-10 08:33 UTCGHSA enrichment
  21. 2026-08-09 20:08 UTCEG score recompute
  22. 2026-08-09 20:08 UTCGHSA enrichment
  23. 2026-08-09 13:47 UTCEPSS rescore
  24. 2026-08-09 07:43 UTCGHSA enrichment
  25. 2026-08-08 19:18 UTCEG score recompute
  26. 2026-08-08 19:18 UTCGHSA enrichment
  27. 2026-08-08 16:37 UTCEPSS rescore
  28. 2026-08-08 06:52 UTCGHSA enrichment
  29. 2026-08-07 18:27 UTCGHSA enrichment
  30. 2026-08-07 17:25 UTCEG score recompute
  31. 2026-08-07 17:25 UTCGHSA enrichment
  32. 2026-08-07 16:27 UTCEG score recompute
  33. 2026-08-07 16:27 UTCGHSA enrichment
  34. 2026-08-07 11:03 UTCEG score recompute
  35. 2026-08-07 11:03 UTCGHSA enrichment
  36. 2026-08-06 22:38 UTCEG score recompute
  37. 2026-08-06 22:17 UTCEG score recompute
  38. 2026-08-06 22:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70634?
CVE-2026-70634 is a high vulnerability published on August 6, 2026. TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read in the Dictionary compression reverse row iterator (tsl/src/compression/algorithms/dictionary.c). The forward path validates the decoded index; the reverse path uses an assertion compiled out of release builds,…
When was CVE-2026-70634 disclosed?
CVE-2026-70634 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70634 actively exploited?
CVE-2026-70634 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 65.3% of all scored CVEs.
What is the CVSS score of CVE-2026-70634?
CVE-2026-70634 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-70634?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70634, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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