CVE-2026-15298Network attack vector

Administrator-context script execution via unsanitized chat titles

Published Jul 10, 2026 · Updated Jul 10, 2026

DOM-based cross-site scripting in pechenki TelSender 1.14.14 and earlier allows remote attackers to execute script via Telegram chat titles. The Tested-button callback inserts chat titles from a Telegram API response into the settings-page DOM without neutralizing HTML. Execution requires an administrator to open the settings page and click Tested; the script runs in that administrator's browser context.

CVSS severity7.2
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based cross-site scripting in pechenki TelSender 1.14.14 and earlier allows remote attackers to execute script via Telegram chat titles. The Tested-button callback inserts chat titles from a Telegram API response into the settings-page DOM without neutralizing HTML. Execution requires an administrator to open the settings page and click Tested; the script runs in that administrator's browser context.

The record

CVE
CVE-2026-15298
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
pechenki
Product
TelSender
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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 <=1.14.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

pechenki · TelSenderversion=0 <=1.14.14

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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