CVE-2026-78183

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-23. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float.

quote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL. But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded by quotes plus NULL, which is length + 3 bytes. Every recognised literal (case-insensitive) overflows by 2 bytes, a single quote and a NULL.

This can be reached by the $dbh->quote method, for example

$dbh->quote( "Infinity", DBI::SQL_NUMERIC ).

This regression was introduced in 3.21.0 by the quote.c rewrite.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

August 23, 2026

Last Modified

August 26, 2026

Advisory Details (4)

Auto-updated Sep 16, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

oss-security - CVE-2026-78183: DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float

http://www.openwall.com/lists/oss-security/2026/08/23/5
generic

Client Challenge

https://metacpan.org/release/TURNSTEP/DBD-Pg-3.21.1/source/Changes
github_commit

commit adacf1de8723 (bucardo/dbdpg)

Fix landed in bucardo/dbdpg commit adacf1de8723 — awaiting tagged release

https://github.com/bucardo/dbdpg/commit/adacf1de872326a465e13f9e4281a674ebcd227e
generic
https://github.com/bucardo/dbdpg/commit/6d6f47ed2403cda55c82b1bad56e388ba7390065.patch

Vendor Advisories for CVE-2026-78183(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 55× in last 7d / 215× 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 215 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78183?
CVE-2026-78183 is a critical vulnerability published on August 23, 2026. DBD::Pg version 3.21.0 for Perl has a heap out-of-bounds write in quote_float. quote_float() allocates the length of the string + 1, which is the size of the bare numeric symbol plus NULL. But for special literals NaN, Inf, +Inf, -Inf, Infinity, +Infinity, -Infinity it emits the literal surrounded…
When was CVE-2026-78183 disclosed?
CVE-2026-78183 was first published in the National Vulnerability Database on August 23, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78183 actively exploited?
CVE-2026-78183 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 55.1% of all scored CVEs.
What is the CVSS score of CVE-2026-78183?
CVE-2026-78183 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-78183?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78183, 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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