CVE-2026-70634

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-54182 (ENISA EUVD) · GHSA-mjw3-r56j-9698 (GitHub Security Advisories)Source: ENISA EUVD

8.1EG
EchelonGraph verdictPlan mitigationThe upstream fix is not in a release yet: until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule, then apply it (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

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
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity81% × 45%
Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule, then apply it.
EPSS PROB
0.5%
EPSS %ILE
45th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.

EG Severity
8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule, then apply it.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 6, 2026

Last Modified

October 24, 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 pull request

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 9× in last 7d / 53× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 253 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 153 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  3. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  6. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  7. 2026-10-27 21:08 UTCEG score recompute
  8. 2026-10-27 21:08 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  10. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  11. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  12. 2026-10-25 14:08 UTCEG score recompute
  13. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  14. 2026-10-24 15:28 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  15. 2026-10-23 21:31 UTCEG score recompute
  16. 2026-10-23 21:31 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  17. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  18. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  19. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  20. 2026-10-20 20:00 UTCEG score recompute
  21. 2026-10-20 20:00 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  22. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  23. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  24. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-10-18 03:18 UTCEG score recompute
Show 75 more
  1. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  4. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-10-13 08:57 UTCEG score recompute
  7. 2026-10-13 08:57 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  8. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  9. 2026-10-12 15:43 UTCEG score recompute
  10. 2026-10-11 19:29 UTCEG score recompute
  11. 2026-10-11 16:44 UTCEG score recompute
  12. 2026-10-11 14:04 UTCEG score recompute
  13. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  15. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  18. 2026-10-06 23:24 UTCEG score recompute
  19. 2026-10-06 23:24 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-05 18:38 UTCEG score recompute
  22. 2026-10-05 18:38 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  23. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  24. 2026-10-04 23:23 UTCEG score recompute
  25. 2026-10-04 23:23 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  26. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  27. 2026-10-04 05:50 UTCEG score recompute
  28. 2026-10-04 05:50 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  29. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  30. 2026-10-03 01:04 UTCEG score recompute
  31. 2026-10-03 01:04 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  32. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  33. 2026-10-02 09:39 UTCEG score recompute
  34. 2026-10-02 09:39 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  35. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  36. 2026-10-01 14:08 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  37. 2026-10-01 01:43 UTCEG score recompute
  38. 2026-10-01 01:43 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  39. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  40. 2026-09-29 05:54 UTCEG score recompute
  41. 2026-09-29 05:54 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  42. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  43. 2026-09-28 05:54 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  44. 2026-09-27 17:29 UTCEG score recompute
  45. 2026-09-27 17:29 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  46. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  47. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  48. 2026-09-25 04:22 UTCEG score recompute
  49. 2026-09-25 04:22 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  50. 2026-09-24 02:58 UTCEG score recompute
  51. 2026-09-24 02:58 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  52. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  53. 2026-09-23 14:31 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  54. 2026-09-23 02:05 UTCEG score recompute
  55. 2026-09-23 02:05 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  56. 2026-09-22 13:39 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  57. 2026-09-22 01:14 UTCEG score recompute
  58. 2026-09-22 01:14 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  59. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  60. 2026-09-21 12:48 UTCEG score recompute
  61. 2026-09-21 12:48 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  62. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  63. 2026-09-20 10:57 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  64. 2026-09-19 21:27 UTCEG score recompute
  65. 2026-09-19 21:27 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  66. 2026-09-19 07:28 UTCEG score recompute
  67. 2026-09-19 07:28 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  68. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  69. 2026-09-18 17:36 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  70. 2026-09-18 03:40 UTCEG score recompute
  71. 2026-09-18 03:40 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  72. 2026-09-17 15:15 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  73. 2026-09-17 00:58 UTCEG score recompute
  74. 2026-09-17 00:58 UTCGHSA enrichmentGHSA-mjw3-r56j-9698 · GitHub severity HIGH · GitHub CVSS 8.1
  75. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 33rd percentile

Frequently asked(5)

What is CVE-2026-70634?
CVE-2026-70634 is a high-severity vulnerability; its CVE record was 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 made public?
CVE-2026-70634 was made public on July 29, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 6, 2026. EchelonGraph's copy of the record carries a last-modified date of October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-70634 actively exploited?
CVE-2026-70634 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70634?
CVE-2026-70634 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70634?
An upstream fix for CVE-2026-70634 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-70634 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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