CVE-2026-53530Public exploitNetwork attack vector

Process abort via multibyte verb delimiter

Published Aug 21, 2026 · Updated Aug 21, 2026

Denial of service in RaTeX before 0.1.11 allows remote attackers to abort a rendering process via crafted LaTeX input. The parse_symbol_inner routine removes a \verb delimiter by slicing arg at byte offsets 1 and len minus 1, so a multibyte UTF-8 delimiter places the start offset inside a character and triggers a Rust panic. Release builds use panic-abort semantics; any network service, batch job, or embedded application that parses untrusted formulas terminates with all in-process work.

CVSS severity8.7
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in RaTeX before 0.1.11 allows remote attackers to abort a rendering process via crafted LaTeX input. The parse_symbol_inner routine removes a \verb delimiter by slicing arg at byte offsets 1 and len minus 1, so a multibyte UTF-8 delimiter places the start offset inside a character and triggers a Rust panic. Release builds use panic-abort semantics; any network service, batch job, or embedded application that parses untrusted formulas terminates with all in-process work.

The record

CVE
CVE-2026-53530
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
erweixin
Product
RaTeX
Classifications
CWE-1285, CWE-400, CWE-248, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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=< 0.1.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

erweixin · RaTeXversion=< 0.1.11

Published CVSS scores

8.7GitHub CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-1285Improper Validation of Specified Index, Position, or Offset in Input
CWE-400Uncontrolled Resource Consumption
CWE-248Uncaught Exception
T1499.004Application or System Exploitation

Public exploit references

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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