CVE-2026-48858

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 86% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Server-Side Request Forgery (SSRF) vulnerability in Erlang/OTP ftp (ftp_internal module) allows FTP bounce attacks and SSRF via an unvalidated PASV response IP address.

The ftp_internal:handle_ctrl_result/2 PASV handler (mode=passive, ipfamily=inet, ftp_extension=false) extracts the IP address from the server's 227 response and passes it directly to gen_tcp:connect/4 without validating it against the control connection peer address. The adjacent EPSV handlers correctly call peername(CSock) to derive the IP from the control connection, but the PASV handler does not. A malicious or compromised FTP server can redirect the client's data connection to an arbitrary internal host and port. On read operations (ftp:ls/1,2, ftp:nlist/1,2, ftp:recv/2,3), data from the redirected target is returned to the caller. On write operations (ftp:send/2,3, ftp:append/2,3), file content is sent to the redirected target. This enables SSRF against internal hosts, cloud metadata endpoints, and FTP bounce attacks against third-party hosts.

The vulnerable path is the default configuration (mode=passive, ipfamily=inet, ftp_extension=false). RFC 2577 section 3 explicitly recommends validating the PASV response IP against the control connection peer.

The ftp application is deprecated and scheduled for removal in OTP-30.

This vulnerability is associated with program files lib/inets/src/ftp/ftp_internal.erl (inets 5.10.4 through 6.5, OTP 17.4 through 20.3) and lib/ftp/src/ftp_internal.erl (ftp 1.0 and later, OTP 21.0 and later).

This issue affects OTP from OTP 17.4 before OTP 29.0.2, OTP 28.5.0.2 and OTP 27.3.4.13, corresponding to inets from 5.10.4 before 7.0 and ftp from 1.0 before 1.2.6, 1.2.4.1 and 1.2.3.1.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

June 10, 2026

Last Modified

July 24, 2026

Advisory Details (6)

Auto-updated Jun 12, 2026
Patch available. Sources: github_commit, github.
generic

Versions — Erlang System Documentation v29.0.2

https://www.erlang.org/doc/system/versions.html#order-of-versions
generic

OSV - Open Source Vulnerabilities

https://osv.dev/vulnerability/EEF-CVE-2026-48858
github Patch Available

FTP Client PASV Response IP not Validated Against Control Peer, Enabling SSRF and FTP Bounce Attacks · Advisory · erlang/otp · GitHub

https://github.com/erlang/otp/security/advisories/GHSA-24cv-hwgr-37fq
github_commit

commit 521bcfa24407 (erlang/otp)

Fix landed in erlang/otp commit 521bcfa24407 — awaiting tagged release

https://github.com/erlang/otp/commit/521bcfa24407ee8cb5614823cf905c37ea3aa605
github_commit

commit 2691a806231f (erlang/otp)

Fix landed in erlang/otp commit 2691a806231f — awaiting tagged release

https://github.com/erlang/otp/commit/2691a806231ffd0490a8a9e20500dec0c7e73727
generic

ftp client PASV response IP not validated against control peer, enabling SSRF and FTP bounce attacks | Erlang Ecosystem Foundation CNA

https://cna.erlef.org/cves/CVE-2026-48858.html

Vendor Advisories for CVE-2026-48858(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
erlang1:23.2.6+dfsg-1 ... 1:29.0~rc3+dfsg-4 (117 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
erlang1:25.2.3+dfsg-1 ... 1:29.0~rc3+dfsg-4 (78 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
erlang1:27.3.4.1+dfsg-1, 1:27.3.4.1+dfsg-1+deb13u1, 1:27.3.4.1+dfsg-1+deb13u21:27.3.4.1+dfsg-1+deb13u3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
erlang1:27.3.4.1+dfsg-1 ... 1:29.0~rc3+dfsg-4 (33 versions)1:29.0.2+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 34× 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 175 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-48858?
CVE-2026-48858 is a medium vulnerability published on June 10, 2026. Server-Side Request Forgery (SSRF) vulnerability in Erlang/OTP ftp (ftp_internal module) allows FTP bounce attacks and SSRF via an unvalidated PASV response IP address. The ftpinternal:handlectrlresult/2 PASV handler (mode=passive, ipfamily=inet, ftpextension=false) extracts the IP address from the…
When was CVE-2026-48858 disclosed?
CVE-2026-48858 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48858 actively exploited?
CVE-2026-48858 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 85.5% of all scored CVEs.
What is the CVSS score of CVE-2026-48858?
CVE-2026-48858 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-48858?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48858, 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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