CVE-2019-25101Network attack vector

Unauthenticated response splitting via unsanitized redirect URL

Published Feb 4, 2023 · Updated Aug 5, 2024

HTTP response splitting in TurboGears 1.0.11.10 allows remote attackers to inject response headers through a crafted redirect URL. The redirect() function passes a redirect_path containing carriage-return or newline characters into the Location header without rejecting it. An application must route attacker-controlled input into redirect(); successful exploitation adds headers or response-body text to its HTTP response.

CVSS severity9.8
Critical
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTTP response splitting in TurboGears 1.0.11.10 allows remote attackers to inject response headers through a crafted redirect URL. The redirect() function passes a redirect_path containing carriage-return or newline characters into the Location header without rejecting it. An application must route attacker-controlled input into redirect(); successful exploitation adds headers or response-body text to its HTTP response.

The record

CVE
CVE-2019-25101
Published
Feb 4, 2023
Updated
Aug 5, 2024
Vendor
TurboGears Project
Product
TurboGears
Classifications
CWE-436, CWE-113, CAPEC-34, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record 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=1.0.11.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TurboGears Project · TurboGearsversion=1.0.11.10

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-436Interpretation Conflict
CWE-113Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
CAPEC-34HTTP Response Splitting
T1190Exploit Public-Facing Application

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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