CVE-2009-4492: n/a vulnerability

CVE-2009-4492: WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through p...

WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through patchlevel 376, and 1.9.2dev writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 07:01 UTC (UTC+00:00)

Security readout for executives and security teams

This old Ruby WEBrick issue lets a remote requester place terminal control characters into WEBrick log files. The main business risk is unsafe log handling: when an administrator views affected logs in a terminal emulator, the terminal could be manipulated, with sources describing possible command execution or file overwrite outcomes. Exposure is most likely in legacy Ruby systems using WEBrick for HTTP service and retaining terminal-viewed access logs. The bundle does not identify modern affected products beyond Ruby/WEBrick version ranges. Prioritize remediation for internet-facing or administrator-accessed legacy Ruby services. This is not supported as actively exploited in the provided sources, but unsafe log viewing can turn a remote request into operator workstation impact. Mitigation focus: Inventory Ruby/WEBrick versions against the affected ranges.; Apply vendor Ruby or Red Hat updates referenced by applicable advisories.; Avoid using WEBrick on exposed legacy systems where unnecessary..

Prepared: Jun 28, 2026, 03:36 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 13, 2010, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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