CVE-2026-34964

MEDIUMPre-NVD 5.85.8
EchelonGraph scoreMEDIUM confidence

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

Score 5.8 from GitHub Security Advisory published 2026-08-25. A secondary CVSS source baseline 5.8; 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
5.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Adminer before 5.5.0 contains a server-side request forgery vulnerability in the login form's server field validator, which only inspects leading integers for privileged ports and fails to reject non-numeric port values. Attackers can inject PDO DSN keys like host= and port= into the server parameter to bypass the privileged-port restriction and establish TCP connections to arbitrary internal hosts and ports before authentication.

CVSS v3
5.8
EG Score
5.8MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

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 (value × EchelonGraph’s weight)
Severity58% × 45%
The EG Score, 5.8 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
35th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 25, 2026

Last Modified

October 12, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
Patch available. Sources: github.
Web page

Adminer before 5.5.0 SSRF via PDO DSN Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/adminer-before-ssrf-via-pdo-dsn-injection
GitHub advisoryMentions a patch (unverified)

Pre-auth SSRF via PDO DSN injection in server field (privileged-port validator bypass) — 5.4.5-dev · Advisory · vrana/adminer · GitHub

https://github.com/vrana/adminer/security/advisories/GHSA-58cq-mgw2-38m5

Vendor Advisories for CVE-2026-34964(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
adminer4.8.1-1 ... 6.1.0-1 (15 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
adminer5.2.1+dfsg-1 ... 6.1.0-1 (11 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
adminer5.2.1+dfsg-1 ... 5.4.4+dfsg-1 (7 versions)
  • every version up to 6.0.0-1: fixed in 6.0.0-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 78× 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 99 of 141 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 42 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-10-12 15:30 UTCEG score recompute
  4. 2026-10-12 15:29 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  5. 2026-10-11 19:54 UTCEG score recompute
  6. 2026-10-11 17:07 UTCEG score recompute
  7. 2026-10-11 14:34 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-10 12:26 UTCEG score recompute
  11. 2026-10-10 12:26 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  13. 2026-10-09 04:38 UTCEG score recompute
  14. 2026-10-09 04:38 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  15. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  16. 2026-10-08 03:45 UTCEG score recompute
  17. 2026-10-08 03:44 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  18. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-10-07 00:25 UTCEG score recompute
  20. 2026-10-07 00:25 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  21. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-10-06 02:43 UTCEG score recompute
  23. 2026-10-06 02:43 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  24. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-10-04 23:57 UTCEG score recompute
Show 74 more
  1. 2026-10-04 23:57 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  2. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-10-04 02:16 UTCEG score recompute
  4. 2026-10-04 02:16 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  5. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  6. 2026-10-03 01:34 UTCEG score recompute
  7. 2026-10-03 01:34 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  8. 2026-10-02 03:40 UTCEG score recompute
  9. 2026-10-02 03:40 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  10. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-10-01 05:37 UTCEG score recompute
  12. 2026-10-01 05:37 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  13. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  14. 2026-09-30 06:56 UTCEG score recompute
  15. 2026-09-30 06:56 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  16. 2026-09-28 21:31 UTCEG score recompute
  17. 2026-09-28 21:31 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  18. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  19. 2026-09-27 19:54 UTCEG score recompute
  20. 2026-09-27 19:54 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  22. 2026-09-26 22:13 UTCEG score recompute
  23. 2026-09-26 22:13 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  24. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  26. 2026-09-25 06:08 UTCEG score recompute
  27. 2026-09-25 06:08 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  28. 2026-09-24 08:28 UTCEG score recompute
  29. 2026-09-24 08:28 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  30. 2026-09-23 10:48 UTCEG score recompute
  31. 2026-09-23 10:48 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  32. 2026-09-22 12:58 UTCEG score recompute
  33. 2026-09-22 12:58 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  34. 2026-09-21 15:17 UTCEG score recompute
  35. 2026-09-21 15:17 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  36. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  37. 2026-09-20 17:06 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  38. 2026-09-19 19:25 UTCEG score recompute
  39. 2026-09-19 19:25 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  40. 2026-09-18 21:45 UTCEG score recompute
  41. 2026-09-18 21:45 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  42. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  43. 2026-09-18 00:05 UTCEG score recompute
  44. 2026-09-18 00:05 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  45. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  46. 2026-09-17 01:06 UTCEG score recompute
  47. 2026-09-17 01:06 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  48. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  49. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  50. 2026-09-16 03:26 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  51. 2026-09-15 05:41 UTCEG score recompute
  52. 2026-09-15 05:41 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  53. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  54. 2026-09-14 07:11 UTCEG score recompute
  55. 2026-09-14 07:11 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  56. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  57. 2026-09-13 09:31 UTCEG score recompute
  58. 2026-09-13 09:31 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  59. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  60. 2026-09-12 11:51 UTCEG score recompute
  61. 2026-09-12 11:51 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  62. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  63. 2026-09-11 14:10 UTCEG score recompute
  64. 2026-09-11 14:10 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  65. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  66. 2026-09-10 16:30 UTCEG score recompute
  67. 2026-09-10 16:30 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  68. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  69. 2026-09-09 18:32 UTCEG score recompute
  70. 2026-09-09 18:32 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  71. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  72. 2026-09-08 20:52 UTCEG score recompute
  73. 2026-09-08 20:52 UTCGHSA enrichmentGHSA-5v92-397q-w6q6 · GitHub CVSS 5.8
  74. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 23rd percentile

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Frequently asked(5)

What is CVE-2026-34964?
CVE-2026-34964 is a medium-severity vulnerability; its CVE record was published on August 25, 2026. Adminer before 5.5.0 contains a server-side request forgery vulnerability in the login form's server field validator, which only inspects leading integers for privileged ports and fails to reject non-numeric port values. Attackers can inject PDO DSN keys like host= and port= into the server…
When was CVE-2026-34964 made public?
CVE-2026-34964 was made public on July 17, 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 25, 2026. EchelonGraph's copy of the record carries a last-modified date of October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-34964 actively exploited?
CVE-2026-34964 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34964?
CVE-2026-34964 has a CVSS base score of 5.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-34964?
A fix for CVE-2026-34964 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-34964 are linked in the Vendor Advisories panel on this page.

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