rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.75.0 until 1.75.1, the serve S3 streamed multipart path in cmd/serve/s3/multipart.go passes attacker-controlled contentLength to multipart.NewRW().Reserve before reading request-body bytes. waitForTurn admits the current part and one oversized part when the buffer is empty despite --multipart-streaming-buffer-limit, and lib/pool allocates 1 MiB pages according to Content-Length or X-Amz-Decoded-Content-Length. A network client can retain or multiply these reservations without sending the declared body, exhausting process or host memory or permanently blocking request handlers. Anonymous S3 deployments require no credentials, while deployments using auth_key require an accepted S3 key. This issue is fixed in version 1.75.1.
CVE-2026-88045
“—” beside the score: it is equal to the CVSS score beside it.
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-10. A secondary CVSS source baseline 7.5; sources differ by 0.0.
Also known asEUVD-2026-75588 (ENISA EUVD) · GHSA-2p48-j3qc-rx9f (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 65EG Risk 65/100
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)Severity75% × 45%Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.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 public PoC (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
- 0.6%
- EPSS %ILE
- 50th
- 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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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 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 public PoC (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.
The score's inputs: 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
September 10, 2026
Last Modified
September 10, 2026
Advisory Details (5)
Auto-updated Sep 10, 2026rclone v1.75.1
Patch available: rclone/rclone v1.75.1
https://github.com/rclone/rclone/releases/tag/v1.75.1commit ab1f458013aa (rclone/rclone)
Fix landed in rclone/rclone commit ab1f458013aa — awaiting tagged release
https://github.com/rclone/rclone/commit/ab1f458013aaf6356e4bdeca61f7cb9139f8eb86commit 7c1dfd99f3e6 (rclone/rclone)
Fix landed in rclone/rclone commit 7c1dfd99f3e6 — awaiting tagged release
https://github.com/rclone/rclone/commit/7c1dfd99f3e6a22fcefd8686cc478226a15e63a1serve s3: concurrent multipart writes can still OOM after the streaming rewrite (3d246a2) — looks like a client-retry race, no per-part retry · Issue #9616 · rclone/rclone · GitHub
https://github.com/rclone/rclone/issues/9616S3 multipart declared-length memory exhaustion · Advisory · rclone/rclone · GitHub
https://github.com/rclone/rclone/security/advisories/GHSA-2p48-j3qc-rx9fVendor Advisories for CVE-2026-88045(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| go | github.com/rclone/rclone @ 1.75.1 (fixes = 1.75.0) | — | 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
(3 across 3 ecosystems)
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| rclone | 1.60.1+dfsg-2 ... 1.69.3+dfsg-3 (8 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| rclone | 1.60.1+dfsg-4 ... 1.69.3+dfsg-3 (6 versions) |
| — |
Go(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| github.com/rclone/rclone | 1.75.0 |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 48× 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.
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 96 is merged into the row it repeats.
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-11-01 07:37 UTCGHSA enrichmentGHSA-2p48-j3qc-rx9f · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-11-01 07:37 UTCEG score recompute
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
- 2026-10-27 18:58 UTCEG score recompute
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-25 13:53 UTCEG score recompute
- 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-20 07:19 UTCEG score recompute
- 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-18 03:03 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
- 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
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- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-13 05:04 UTCEG score recompute
- 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-12 14:49 UTCEG score recompute
- 2026-10-11 19:15 UTCEG score recompute
- 2026-10-11 16:32 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-11 13:49 UTCEG score recompute
- 2026-10-10 20:10 UTCEG score recompute
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-10 08:10 UTCEG score recompute
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-08 23:47 UTCEG score recompute
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-08 01:06 UTCEG score recompute
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-07 01:20 UTCEG score recompute
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-06 01:36 UTCEG score recompute
- 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-05 01:11 UTCEG score recompute
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-04 01:11 UTCEG score recompute
- 2026-10-03 01:28 UTCEG score recompute
- 2026-10-02 01:34 UTCEG score recompute
- 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-01 01:51 UTCEG score recompute
- 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-30 01:55 UTCEG score recompute
- 2026-09-29 08:23 UTCEG score recompute
- 2026-09-28 20:31 UTCEG score recompute
- 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-27 20:48 UTCEG score recompute
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-26 21:05 UTCEG score recompute
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-09-26 09:13 UTCEG score recompute
- 2026-09-24 18:17 UTCEG score recompute
- 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-23 18:08 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-22 18:25 UTCEG score recompute
- 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-22 06:34 UTCEG score recompute
- 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-21 06:51 UTCEG score recompute
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-19 19:15 UTCEG score recompute
- 2026-09-18 19:31 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 44th percentile
- 2026-09-17 19:47 UTCEG score recompute
- 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-16 18:20 UTCEG score recompute
- 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-16 06:28 UTCEG score recompute
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-15 06:45 UTCEG score recompute
- 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-13 19:08 UTCEG score recompute
- 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-12 19:25 UTCEG score recompute
- 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-11 19:41 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-10 19:59 UTCEG score recompute
- 2026-09-10 18:22 UTCEG score recompute
- 2026-09-10 17:40 UTCEG score recompute
- 2026-09-10 17:20 UTCEG score recompute
- 2026-09-10 16:25 UTCEG score recomputeFirst assessed: 7.5 HIGH
- 2026-09-10 16:24 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Same product
10 shownGo:github.com/rclone/rclone
Frequently asked(5)
What is CVE-2026-88045?
When was the CVE record for CVE-2026-88045 published?
Is CVE-2026-88045 actively exploited?
What is the CVSS score of CVE-2026-88045?
How do I remediate CVE-2026-88045?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-88045
Is Your Infrastructure Affected by CVE-2026-88045?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.