CVE-2026-70634

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-07. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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(medium)
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
34%
KEV
Not listed

Published

August 6, 2026

Last Modified

September 1, 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 22× in last 7d / 103× 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.

Showing the most recent 100 of 165 total refreshes for this CVE.

  1. 2026-09-19 21:27 UTCEG score recompute
  2. 2026-09-19 21:27 UTCGHSA enrichment
  3. 2026-09-19 07:28 UTCEG score recompute
  4. 2026-09-19 07:28 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 17:36 UTCGHSA enrichment
  7. 2026-09-18 03:40 UTCEG score recompute
  8. 2026-09-18 03:40 UTCGHSA enrichment
  9. 2026-09-17 15:15 UTCGHSA enrichment
  10. 2026-09-17 00:58 UTCEG score recompute
  11. 2026-09-17 00:58 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 02:59 UTCGHSA enrichment
  15. 2026-09-15 14:26 UTCEG score recompute
  16. 2026-09-15 14:26 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 01:09 UTCGHSA enrichment
  19. 2026-09-14 10:58 UTCGHSA enrichment
  20. 2026-09-13 22:33 UTCEG score recompute
  21. 2026-09-13 22:33 UTCGHSA enrichment
  22. 2026-09-13 10:08 UTCGHSA enrichment
  23. 2026-09-12 21:43 UTCEG score recompute
  24. 2026-09-12 21:43 UTCGHSA enrichment
  25. 2026-09-12 15:02 UTCEPSS rescore
Show 75 more
  1. 2026-09-12 09:17 UTCGHSA enrichment
  2. 2026-09-11 20:52 UTCEG score recompute
  3. 2026-09-11 20:52 UTCGHSA enrichment
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 08:11 UTCGHSA enrichment
  6. 2026-09-10 19:46 UTCEG score recompute
  7. 2026-09-10 19:46 UTCGHSA enrichment
  8. 2026-09-10 09:35 UTCEPSS rescore
  9. 2026-09-10 07:18 UTCGHSA enrichment
  10. 2026-09-09 18:52 UTCGHSA enrichment
  11. 2026-09-09 06:07 UTCEG score recompute
  12. 2026-09-09 06:07 UTCGHSA enrichment
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-08 07:41 UTCGHSA enrichment
  15. 2026-09-07 17:55 UTCEG score recompute
  16. 2026-09-07 17:55 UTCGHSA enrichment
  17. 2026-09-07 16:01 UTCEPSS rescore
  18. 2026-09-06 17:17 UTCEG score recompute
  19. 2026-09-06 17:17 UTCGHSA enrichment
  20. 2026-09-06 13:47 UTCEPSS rescore
  21. 2026-09-06 04:47 UTCEG score recompute
  22. 2026-09-06 04:47 UTCGHSA enrichment
  23. 2026-09-05 16:22 UTCEG score recompute
  24. 2026-09-05 16:22 UTCGHSA enrichment
  25. 2026-09-05 15:31 UTCEPSS rescore
  26. 2026-09-05 03:31 UTCEG score recompute
  27. 2026-09-05 03:31 UTCGHSA enrichment
  28. 2026-09-04 09:11 UTCEG score recompute
  29. 2026-09-04 09:11 UTCGHSA enrichment
  30. 2026-09-04 05:07 UTCEPSS rescore
  31. 2026-09-03 19:12 UTCGHSA enrichment
  32. 2026-09-03 06:15 UTCEG score recompute
  33. 2026-09-03 06:15 UTCGHSA enrichment
  34. 2026-09-02 14:12 UTCEPSS rescore
  35. 2026-09-02 06:56 UTCGHSA enrichment
  36. 2026-09-01 16:05 UTCEG score recompute
  37. 2026-09-01 16:04 UTCGHSA enrichment
  38. 2026-09-01 13:54 UTCEPSS rescore
  39. 2026-09-01 04:40 UTCEPSS rescore
  40. 2026-08-31 20:45 UTCEG score recompute
  41. 2026-08-31 20:45 UTCGHSA enrichment
  42. 2026-08-30 23:57 UTCEG score recompute
  43. 2026-08-30 23:57 UTCGHSA enrichment
  44. 2026-08-30 19:17 UTCEPSS rescore
  45. 2026-08-30 11:32 UTCEG score recompute
  46. 2026-08-30 11:32 UTCGHSA enrichment
  47. 2026-08-30 01:22 UTCEPSS rescore
  48. 2026-08-29 23:06 UTCGHSA enrichment
  49. 2026-08-29 10:39 UTCEG score recompute
  50. 2026-08-29 10:39 UTCGHSA enrichment
  51. 2026-08-28 21:42 UTCEPSS rescore
  52. 2026-08-28 12:00 UTCGHSA enrichment
  53. 2026-08-27 19:51 UTCEG score recompute
  54. 2026-08-27 19:51 UTCGHSA enrichment
  55. 2026-08-27 05:00 UTCGHSA enrichment
  56. 2026-08-26 16:34 UTCEG score recompute
  57. 2026-08-26 16:34 UTCGHSA enrichment
  58. 2026-08-26 14:47 UTCEPSS rescore
  59. 2026-08-26 03:24 UTCGHSA enrichment
  60. 2026-08-25 14:59 UTCEG score recompute
  61. 2026-08-25 14:59 UTCGHSA enrichment
  62. 2026-08-25 13:49 UTCEPSS rescore
  63. 2026-08-25 02:34 UTCEG score recompute
  64. 2026-08-25 02:34 UTCGHSA enrichment
  65. 2026-08-24 14:07 UTCEG score recompute
  66. 2026-08-24 14:07 UTCGHSA enrichment
  67. 2026-08-24 01:37 UTCGHSA enrichment
  68. 2026-08-23 13:12 UTCGHSA enrichment
  69. 2026-08-23 00:42 UTCEG score recompute
  70. 2026-08-23 00:42 UTCGHSA enrichment
  71. 2026-08-23 00:19 UTCEPSS rescore
  72. 2026-08-22 12:17 UTCGHSA enrichment
  73. 2026-08-21 23:52 UTCEG score recompute
  74. 2026-08-21 23:52 UTCGHSA enrichment
  75. 2026-08-21 23:49 UTCEPSS rescore

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 September 1, 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 65.9% of all scored CVEs.
What is the CVSS score of CVE-2026-70634?
CVE-2026-70634 has a CVSS v3 base score of 8.1 (NVD).
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.

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