TIM Flow < 26.0.6 CRLF Injection via rt Parameter and access_token Cookie (CVE-2026-39915) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-39915

TIM Flow < 26.0.6 CRLF Injection via rt Parameter and access_token Cookie

Answer in brief

CVE-2026-39915 records a Unknown severity vulnerability in TIM Flow < 26.0.6 CRLF Injection via rt Parameter and access_token Cookie. The current sources do not mark it as known exploited. The current feed maps TIM Solutions/TIM Flow (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 24, 2026Updated Aug 24, 2026Source checked Aug 24, 2026First seen by HOL Aug 24, 2026Material review Aug 24, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps TIM Solutions/TIM Flow (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
TIM Solutions/TIM Flowgeneric	>=0 <26.0.6	26.0.6

Recommended response

Check inventory. Check lockfiles and deployed manifests for TIM Solutions/TIM Flow.
Review the reported fix. Update TIM Solutions/TIM Flow to 26.0.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 24, 2026

Sources and claim methodology

Upstream source description

TIM Flow before 26.0.6 contains a CRLF injection vulnerability that allows remote attackers to inject arbitrary HTTP headers and response body content by embedding unsanitized carriage return and line feed sequences in the rt URL parameter and access_token cookie, which are reflected into Set-Cookie response headers. Attackers can craft malicious requests to induce authenticated users to execute arbitrary JavaScript in their browser context, enabling session token theft and account credential modification.

Quoted source text, attributed separately from HOL analysis.