CVE-2026-50642

Terminal output manipulation via incomplete control-sequence sanitization

Published Jul 29, 2026 · Updated Jul 29, 2026

Terminal escape injection in So Fancy diff-so-fancy 1.4.10 and earlier allows attackers to manipulate terminal output via crafted diff data. The output path strips only SGR styling codes and sends carriage returns plus OSC and CSI sequences from filenames, metadata, or content to the terminal; do_dsf_stuff also stored the second filename without sanitize_display. Viewing an attacker-controlled diff is required, enabling filename spoofing, screen clearing, terminal-state changes, or clipboard text injection that can precede unintended command execution.

CVSS severity4.8
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Terminal escape injection in So Fancy diff-so-fancy 1.4.10 and earlier allows attackers to manipulate terminal output via crafted diff data. The output path strips only SGR styling codes and sends carriage returns plus OSC and CSI sequences from filenames, metadata, or content to the terminal; do_dsf_stuff also stored the second filename without sanitize_display. Viewing an attacker-controlled diff is required, enabling filename spoofing, screen clearing, terminal-state changes, or clipboard text injection that can precede unintended command execution.

The record

CVE
CVE-2026-50642
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
So Fancy
Product
diff-so-fancy
Classifications
CWE-116, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.4.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

So Fancy · diff-so-fancyversion=0 <=1.4.10

Published CVSS scores

4.8CERT.PLCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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