Common Weakness Enumeration

CWE-835

Allowed

Loop with Unreachable Exit Condition ('Infinite Loop')

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

1096 vulnerabilities reference this CWE, most recent first.

CVE-2026-68499 (GCVE-0-2026-68499)

Vulnerability from cvelistv5 – Published: 2026-07-30 20:07 – Updated: 2026-07-31 19:19
VLAI
Title
re2: Global `String.prototype.match` with an empty-matchable pattern never advances → infinite loop with unbounded native memory growth (DoS)
Summary
re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior to 1.25.2, re2's String.prototype.match implementation with a global RE2 pattern that can match the empty string fails to advance its native matching cursor in lib/match.cc, causing an infinite loop and unbounded native memory growth that blocks the event loop and can exhaust host memory. This issue is fixed in 1.25.2.
Severity
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
uhop node-re2 Affected: < 1.25.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-67214 (GCVE-0-2026-67214)

Vulnerability from cvelistv5 – Published: 2026-07-29 13:32 – Updated: 2026-07-29 14:37
VLAI
Title
nanoid before 5.1.16 Infinite Loop via Negative Size in non-secure module
Summary
nanoid (Nano ID) before 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size to these functions is exposed to a denial-of-service condition.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
nanoid_project nanoid Affected: 0 , < 5.1.16 (semver)
Unaffected: 5.1.16 (semver)
Create a notification for this product.
Date Public
2026-06-24 00:00
Show details on NVD website
To clipboard 

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CVE-2026-67213 (GCVE-0-2026-67213)

Vulnerability from cvelistv5 – Published: 2026-07-29 13:32 – Updated: 2026-07-29 14:42
VLAI
Title
nanoid before 5.1.6 Infinite Loop via Zero Size in customAlphabet and customRandom
Summary
nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
nanoid_project nanoid Affected: 0 , < 5.1.6 (semver)
Unaffected: 5.1.6 (semver)
Create a notification for this product.
Date Public
2025-09-22 00:00
Show details on NVD website
To clipboard 

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CVE-2026-66730 (GCVE-0-2026-66730)

Vulnerability from cvelistv5 – Published: 2026-07-27 16:55 – Updated: 2026-07-31 18:19 X_Open Source
VLAI
Title
facil.io 0.6.0 - 0.7.6 Infinite Loop DoS via Multipart MIME Body Parser
Summary
facil.io 0.6.0 through 0.7.6 contains a denial-of-service vulnerability in the multipart body parser that allows an unauthenticated remote attacker to permanently freeze worker processes at 100% CPU by sending a multipart/form-data request with a partial closing boundary. The missing progress guard in the parser loop causes http_mime_parse to return 0 bytes consumed without setting done or error flags, causing the calling loop to re-invoke the parser on the same buffer indefinitely, exhausting all workers and permanently disabling the server until manually restarted.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
boazsegev facil.io Affected: 0.6.0 , ≤ 0.7.6 (semver)
Create a notification for this product.
Date Public
2026-07-24 00:00
Credits
Theodosis Paidakis
Show details on NVD website
To clipboard 

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CVE-2026-64834 (GCVE-0-2026-64834)

Vulnerability from cvelistv5 – Published: 2026-07-22 17:06 – Updated: 2026-07-28 01:06 X_Open Source
VLAI
Title
FFmpeg 0.6.3 - 8.1.2 Infinite Loop DoS via RTP/ASF Demuxer
Summary
FFmpeg versions 0.6.3 through 8.1.2 contain an infinite loop vulnerability in the RTP/ASF demuxer within libavformat/rtpdec_asf.c that allows remote attackers to cause denial of service by sending a crafted RTP/ASF stream. The rtp_asf_fix_header function fails to validate a minimum chunksize when iterating over ASF objects, causing the loop pointer to never advance when a chunksize is smaller than the 24-byte minimum ASF object header size, resulting in CPU exhaustion that denies service to legitimate users.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
FFmpeg FFmpeg Affected: 0.6.3 , ≤ 8.1.2 (semver)
Affected: 11d5f475be95d22d5f0692220cc772b116abc632 (git)
Create a notification for this product.
Date Public
2026-07-02 00:00
Credits
Pavel Kohout, Aisle Research
Show details on NVD website
To clipboard 

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CVE-2026-64611 (GCVE-0-2026-64611)

Vulnerability from cvelistv5 – Published: 2026-07-23 10:46 – Updated: 2026-07-23 20:15
VLAI
Title
Libcupsfilters: cups-filters: libcupsfilters: cpu exhaustion via infinite loop in cfieee1284normalizemakemodel()
Summary
A flaw was found in libcupsfilters. The cfIEEE1284NormalizeMakeModel() function enters an infinite loop when processing a printer-advertised IEEE-1284 device ID with an empty model field, causing sustained CPU consumption. A network-adjacent attacker could exploit this by broadcasting a specially crafted printer advertisement, leading to denial of service.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Date Public
2026-06-14 08:37
Credits
Red Hat would like to thank Michalis Vasileiadis for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2026-62642 (GCVE-0-2026-62642)

Vulnerability from cvelistv5 – Published: 2026-07-14 15:49 – Updated: 2026-07-14 17:18
VLAI
Summary
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, an infinite loop was discovered in the TNEF decoder, which may lead to denial of service upon opening an email with a TNEF attachment.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
Roundcube Webmail Affected: 1.6.0 , < 1.6.17 (semver)
Affected: 1.7.0 , < 1.7.2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-59935 (GCVE-0-2026-59935)

Vulnerability from cvelistv5 – Published: 2026-07-08 19:34 – Updated: 2026-07-09 13:36
VLAI
Title
pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)
Summary
pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issue is fixed in version 6.14.2.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
py-pdf pypdf Affected: < 6.14.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-59933 (GCVE-0-2026-59933)

Vulnerability from cvelistv5 – Published: 2026-07-28 17:29 – Updated: 2026-07-28 17:57
VLAI
Title
PhpSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion
Summary
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the OLE reader follows sector chains from attacker-controlled XLS/OLE metadata without detecting cycles or enforcing a maximum chain length. A tiny malformed .xls/OLE file can set the small-block depot sector chain to point back to itself. During normal XLS detection, OLERead::read() appends the same sector data repeatedly until the PHP process exhausts memory. This is reachable from Reader\Xls::canRead() and therefore from automatic spreadsheet type detection. Applications that accept attacker-controlled spreadsheet uploads can suffer denial of service from a very small file. This issue has been fixed in versions 5.8.1, 3.10.7, 2.4.7, 2.1.18 and 1.30.6.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
PHPOffice PhpSpreadsheet Affected: >= 4.0.0, < 5.8.1
Affected: >= 3.3.0, < 3.10.7
Affected: >= 2.2.0, < 2.4.7
Affected: >= 2.0.0, < 2.1.18
Affected: < 1.30.6
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-59901 (GCVE-0-2026-59901)

Vulnerability from cvelistv5 – Published: 2026-07-29 17:48 – Updated: 2026-07-29 18:09
VLAI
Title
Netty Bzip2Decoder: Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, the `Bzip2Decoder` handler in Netty's compression codec pipeline is vulnerable to a denial-of-service attack through a malformed bzip2 stream that permanently captures the event-loop thread in an infinite loop. The vulnerability exists in the run-length encoding (RLE) state machine within [`Bzip2BlockDecompressor.read()`]. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
netty netty Affected: >=4.2.0.Final, < 4.2.16.Final
Affected: < 4.1.136.Final
Create a notification for this product.
Show details on NVD website
To clipboard 

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No mitigation information available for this CWE.

No CAPEC attack patterns related to this CWE.

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