CVE-2026-62268

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (5th 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-2026-117789 (ENISA EUVD) · GHSA-gfp8-w835-v44j (GitHub Security Advisories)Source: ENISA EUVD

5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. Prior to 1.4.5 and 2.0.0b22, extracting a malicious archive can follow a symlinked parent path or resolve embedded dot-dot path components and delete or overwrite files outside the extraction directory. A crafted slave hardlink can also use an attacker-controlled hardlink source outside the extraction directory and hard-link that file into the restored tree, disclosing its contents. Creating the malicious archive requires repository access and, for encrypted or authenticated repositories, the Borg key and passphrase; a victim must then extract the archive. This issue is fixed in versions 1.4.5 and 2.0.0b22.

CVSS
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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)
Severity53% × 45%
Impact severity (EG Severity): CVSS 5.3 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
5th
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 (5.3): severity, escalated by confirmed exploitation. This CVE's 5.3 is its impact severity (EG Severity), not escalated.

EG Severity
5.3 MEDIUMCVSS-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 2026-11-12). 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

October 15, 2026

Last Modified

November 12, 2026

Advisory Details (9)

Auto-updated Nov 9, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

Release 2.0.0b22

Patch available: borgbackup/borg 2.0.0b22 (pre-release)

https://github.com/borgbackup/borg/releases/tag/2.0.0b22
GitHub release Patch Available

Release 1.4.5

Patch available: borgbackup/borg 1.4.5

https://github.com/borgbackup/borg/releases/tag/1.4.5
GitHub commit

commit d907f2cb5733 (borgbackup/borg)

Fix landed in borgbackup/borg commit d907f2cb5733 — awaiting tagged release

https://github.com/borgbackup/borg/commit/d907f2cb57337041c4fa55ca4682895535e5076b
GitHub commit

commit 4f37fdfed10b (borgbackup/borg)

Fix landed in borgbackup/borg commit 4f37fdfed10b — awaiting tagged release

https://github.com/borgbackup/borg/commit/4f37fdfed10b50559a0dd333b0d5581c642af329
GitHub commit

commit 3e9ed6d1ad6d (borgbackup/borg)

Fix landed in borgbackup/borg commit 3e9ed6d1ad6d — awaiting tagged release

https://github.com/borgbackup/borg/commit/3e9ed6d1ad6d3531b39c07b8ef3ecf41fce4437f
GitHub commit

commit 2d632531028b (borgbackup/borg)

Fix landed in borgbackup/borg commit 2d632531028b — awaiting tagged release

https://github.com/borgbackup/borg/commit/2d632531028b09da8ab5d1450f89bebcc205d640
GitHub commit

commit 141888f2fabc (borgbackup/borg)

Fix landed in borgbackup/borg commit 141888f2fabc — awaiting tagged release

https://github.com/borgbackup/borg/commit/141888f2fabcd57a300547c2aa63212cb213924d
GitHub commit

commit 0ac568e29051 (borgbackup/borg)

Fix landed in borgbackup/borg commit 0ac568e29051 — awaiting tagged release

https://github.com/borgbackup/borg/commit/0ac568e290518c3bbe781459978720dde7fab224
GitHub advisoryMentions a patch (unverified)

borg extract might modify or disclose out-of-tree files when extracting maliciously crafted archives · Advisory · borgbackup/borg · GitHub

https://github.com/borgbackup/borg/security/advisories/GHSA-gfp8-w835-v44j

Vendor Advisories for CVE-2026-62268(1)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
pipborgbackup @ 1.4.5 (fixes < 1.4.5)—ghsa
pipborgbackup @ 2.0.0b22 (fixes >= 2.0.0b1, < 2.0.0b22)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(8 across 5 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
borgbackup1.2.4-1 ... 1.4.5-1 (37 versions)
  • every version on: no fix on record
—
borgbackup22.0.0b11-1 ... 2.0.0b9-2 (58 versions)
  • every version on: no fix on record
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
borgbackup1.4.0-5 ... 1.4.5-1 (18 versions)
  • every version on: no fix on record
—
borgbackup22.0.0b19-1 ... 2.0.0b25-4 (25 versions)
  • every version on: no fix on record
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
borgbackup1.4.0-5 ... 1.4.4-5 (17 versions)
  • every version up to 1.4.5-1: fixed in 1.4.5-1
—
borgbackup22.0.0b19-1 ... 2.0.0b21-1 (10 versions)
  • every version up to 2.0.0b22-1: fixed in 2.0.0b22-1
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
borgbackup—
  • every version up to 1.4.5-r0: fixed in 1.4.5-r0
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
borgbackup2.0.0b1 ... 2.0.0b9 (21 versions)
  • every version up to 1.4.5: fixed in 1.4.5
  • 2.0.0b1 up to 2.0.0b22: fixed in 2.0.0b22
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 16× 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.

  1. 2026-11-13 16:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-11-12 22:32 UTCEchelonGraph re-scored
  3. 2026-11-12 22:32 UTCGHSA enrichmentGHSA-gfp8-w835-v44j · GitHub severity MODERATE
  4. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-11-11 07:52 UTCEchelonGraph re-scored
  7. 2026-11-11 07:52 UTCGHSA enrichmentGHSA-gfp8-w835-v44j · GitHub severity MODERATE
  8. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-11-09 23:48 UTCEchelonGraph re-scored
  10. 2026-11-09 23:48 UTCGHSA enrichmentGHSA-gfp8-w835-v44j · GitHub severity MODERATE
  11. 2026-11-09 23:05 UTCEchelonGraph re-scored
  12. 2026-11-09 23:05 UTCGHSA enrichmentGHSA-gfp8-w835-v44j · GitHub severity MODERATE
  13. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-11-05 21:32 UTCEchelonGraph re-scored
  18. 2026-11-05 21:32 UTCGHSA enrichmentGHSA-gfp8-w835-v44j · GitHub severity MODERATE
  19. 2026-11-05 20:33 UTCEchelonGraph re-scoredFirst assessed: 5.3 MEDIUM
  20. 2026-11-05 20:33 UTCGHSA enrichmentGHSA-gfp8-w835-v44j · GitHub severity MODERATE
  21. 2026-11-05 20:32 UTCMITRE cvelistV5CVSS → 5.3 · CVSS v4 → 5.3
  22. 2026-11-01 07:41 UTCGHSA enrichmentGHSA-gfp8-w835-v44j · GitHub severity MODERATE
  23. 2026-10-25 14:14 UTCEchelonGraph re-scored
  24. 2026-10-18 03:24 UTCEchelonGraph re-scored
  25. 2026-10-15 20:27 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-62268?
CVE-2026-62268 is a medium-severity vulnerability; its CVE record was published on October 15, 2026. borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. Prior to 1.4.5 and 2.0.0b22, extracting a malicious archive can follow a symlinked parent path or resolve embedded dot-dot path components and delete or overwrite files outside the extraction…
When was the CVE record for CVE-2026-62268 published?
The CVE record for CVE-2026-62268 was published on October 15, 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 November 12, 2026; the record at its source may have been updated since.
Is CVE-2026-62268 actively exploited?
CVE-2026-62268 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-62268?
CVE-2026-62268 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-62268?
A fix for CVE-2026-62268 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-62268 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-2026-62268

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