CVE-2026-93853

HIGHPre-NVD 7.27.2
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (10th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-89463 (ENISA EUVD) · GHSA-hjpg-q85j-gwxx (GitHub Security Advisories)Source: ENISA EUVD

7.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (EnterpriseDB Corporation) states them: "Upgrade to Barman 3.20.1 or later."

Unverified ownership in Barman snapshot backup deletion allows a principal who can write the backup catalog to cause Barman to delete unrelated cloud snapshots. When a snapshot backup is deleted, either explicitly or by retention policy enforcement, Barman reads the snapshot identifiers from the backup.info file and passes them to the cloud provider's delete API using Barman's own credentials, without verifying that the snapshots belong to that backup. An attacker who can overwrite backup.info but lacks snapshot delete permissions can substitute the identifiers of other snapshots, causing Barman to delete any snapshot its cloud identity can reach on AWS, Microsoft Azure, or Google Cloud. Exploitation requires a deployment where the principal that writes the backup catalog is separate from the identity Barman uses to delete snapshots. Barman versions from 3.4.0 (Google Cloud), 3.6.0 (Azure), and 3.7.0 (AWS) up to and including 3.20.0 are affected. The issue is fixed in Barman 3.20.1.

CVSS
7.2
EG Score
7.2HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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)
Severity72% × 45%
Impact severity (EG Severity): CVSS 7.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
10th
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 (7.2): severity, escalated by confirmed exploitation. This CVE's 7.2 is its impact severity (EG Severity), not escalated.

EG Severity
7.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). 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.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.

A fix is available. Apply it within your standard update timelines.

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.

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

September 29, 2026

Last Modified

September 30, 2026

Vendor Advisories for CVE-2026-93853(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
barman3.10.0-1 ... 3.9.0-1 (27 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
barman3.13.3-1 ... 3.20.1-1 (15 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
barman3.13.3-1 ... 3.20.0-2 (14 versions)
  • every version up to 3.20.1-1: fixed in 3.20.1-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 32× 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 its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS → 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 103 rows 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 3 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-11-11 04:01 UTCEchelonGraph re-scored
  4. 2026-11-11 04:01 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  5. 2026-11-10 16:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  6. 2026-11-10 14:53 UTCEchelonGraph re-scored
  7. 2026-11-10 14:53 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  8. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-11-06 16:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  11. 2026-11-05 16:39 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  13. 2026-11-03 18:44 UTCEchelonGraph re-scored
  14. 2026-11-03 18:44 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  15. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  21. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  22. 2026-10-27 21:12 UTCEchelonGraph re-scored
  23. 2026-10-27 21:12 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  24. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  25. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
Show 75 more
  1. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  2. 2026-10-25 13:49 UTCEchelonGraph re-scored
  3. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  4. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  5. 2026-10-22 11:34 UTCEchelonGraph re-scored
  6. 2026-10-22 11:34 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  7. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  8. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-10-20 06:54 UTCEchelonGraph re-scored
  10. 2026-10-20 06:54 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  11. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-10-18 02:58 UTCEchelonGraph re-scored
  13. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  14. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  15. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-10-13 04:22 UTCEchelonGraph re-scored
  18. 2026-10-13 04:22 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  19. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-10-12 14:42 UTCEchelonGraph re-scored
  21. 2026-10-12 03:11 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  22. 2026-10-11 19:12 UTCEchelonGraph re-scored
  23. 2026-10-11 16:28 UTCEchelonGraph re-scored
  24. 2026-10-11 15:49 UTCEchelonGraph re-scored
  25. 2026-10-11 15:49 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  26. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  27. 2026-10-11 13:41 UTCEchelonGraph re-scored
  28. 2026-10-11 04:33 UTCEchelonGraph re-scored
  29. 2026-10-11 04:32 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  30. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  31. 2026-10-10 17:12 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  32. 2026-10-10 05:55 UTCEchelonGraph re-scored
  33. 2026-10-10 05:55 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  34. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  35. 2026-10-09 18:38 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  36. 2026-10-09 07:22 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  37. 2026-10-08 20:05 UTCEchelonGraph re-scored
  38. 2026-10-08 20:05 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  39. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  40. 2026-10-08 08:39 UTCEchelonGraph re-scored
  41. 2026-10-08 08:39 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  42. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  43. 2026-10-07 21:22 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  44. 2026-10-07 10:05 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  45. 2026-10-06 22:49 UTCEchelonGraph re-scored
  46. 2026-10-06 22:49 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  47. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  48. 2026-10-06 11:32 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  49. 2026-10-06 00:12 UTCEchelonGraph re-scored
  50. 2026-10-06 00:12 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  51. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  52. 2026-10-05 12:54 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  53. 2026-10-05 01:38 UTCEchelonGraph re-scored
  54. 2026-10-05 01:38 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  55. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  56. 2026-10-04 14:21 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  57. 2026-10-04 03:02 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  58. 2026-10-03 15:46 UTCEchelonGraph re-scored
  59. 2026-10-03 15:46 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  60. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  61. 2026-10-03 04:28 UTCEchelonGraph re-scored
  62. 2026-10-03 04:28 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  63. 2026-10-02 17:12 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  64. 2026-10-02 05:54 UTCEchelonGraph re-scored
  65. 2026-10-02 05:54 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  66. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  67. 2026-10-01 18:38 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  68. 2026-10-01 07:18 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  69. 2026-09-30 20:01 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  70. 2026-09-30 16:25 UTCEchelonGraph re-scored
  71. 2026-09-30 16:25 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  72. 2026-09-30 15:45 UTCEchelonGraph re-scored
  73. 2026-09-30 15:45 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH
  74. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  75. 2026-09-30 08:44 UTCGHSA enrichmentGHSA-hjpg-q85j-gwxx · GitHub severity HIGH

Frequently asked(5)

What is CVE-2026-93853?
CVE-2026-93853 is a high-severity vulnerability; its CVE record was published on September 29, 2026. Unverified ownership in Barman snapshot backup deletion allows a principal who can write the backup catalog to cause Barman to delete unrelated cloud snapshots. When a snapshot backup is deleted, either explicitly or by retention policy enforcement, Barman reads the snapshot identifiers from the…
When was the CVE record for CVE-2026-93853 published?
The CVE record for CVE-2026-93853 was published on September 29, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 30, 2026; the record at its source may have been updated since.
Is CVE-2026-93853 actively exploited?
CVE-2026-93853 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-93853?
CVE-2026-93853 has a CVSS base score of 7.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-93853?
A fix for CVE-2026-93853 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (EnterpriseDB Corporation) states them: "Upgrade to Barman 3.20.1 or later." The vendor advisories EchelonGraph has for CVE-2026-93853 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-93853

Explore →

Is Your Infrastructure Affected by CVE-2026-93853?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.