Common Weakness Enumeration

CWE-117

Allowed

Improper Output Neutralization for Logs

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.

211 vulnerabilities reference this CWE, most recent first.

CVE-2026-81696 (GCVE-0-2026-81696)

Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-08-27 17:42
VLAI
Title
openssl_encrypt before 1.4.9 Terminal Injection via info Command
Summary
openssl_encrypt versions before 1.4.9 fail to sanitize terminal control characters in file metadata printed by the info command. Attackers can craft malicious files containing escape sequences to repaint terminal output and forge verification information displayed to users.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 17:42 UTC
CWE
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Vendor Product Version
jahlives openssl_encrypt Affected: 0 , < 1.4.9 (semver)
Unaffected: 1.4.9 (semver)
Create a notification for this product.
Date Public
2026-08-12 00:00
Show details on NVD website
To clipboard 

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CVE-2026-81695 (GCVE-0-2026-81695)

Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-08-27 19:26
VLAI
Title
openssl_encrypt before 1.4.9 Terminal Injection via key_id
Summary
openssl_encrypt versions before 1.4.9 fail to escape attacker-controlled key_id values printed to stderr during decrypt auto-detection. Attackers can craft encrypted files with malicious key_id containing escape sequences to repaint terminal output and forge authenticity verification blocks.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 19:26 UTC
CWE
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Vendor Product Version
jahlives openssl_encrypt Affected: 0 , < 1.4.9 (semver)
Unaffected: 1.4.9 (semver)
Create a notification for this product.
Date Public
2026-08-12 00:00
Show details on NVD website
To clipboard 

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CVE-2026-81694 (GCVE-0-2026-81694)

Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-08-28 15:59
VLAI
Title
verify-usb before 1.4.9 Output Injection via Unsanitized Filenames
Summary
openssl-encrypt (pip package, versions <= 1.4.8) fails to sanitize filenames read from untrusted drive data (outside the AES-GCM authenticated manifest) before printing them in the verify-usb command's output. An attacker can plant filenames containing terminal cursor-movement and erase-line control bytes that repaint a forged PASSED verdict on screen, masking actual tamper detection. Fixed in 1.4.9 by routing drive-derived names through sanitize_for_display().
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 18:47 UTC
CWE
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Vendor Product Version
jahlives openssl_encrypt Affected: 0 , < 1.4.9 (semver)
Unaffected: 1.4.9 (semver)
Create a notification for this product.
Date Public
2026-08-12 00:00
Show details on NVD website
To clipboard 

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CVE-2026-74885 (GCVE-0-2026-74885)

Vulnerability from cvelistv5 – Published: 2026-08-17 11:04 – Updated: 2026-08-17 14:42
VLAI
Title
openssl_encrypt before 1.4.0 Logging Bug and Race Condition
Summary
openssl_encrypt versions before 1.4.0 contain a logging bug in restore_hidden_modules() that logs module counts after clearing, always showing zero restored modules and corrupting audit trails. Additionally, a race condition exists between module hiding and import hook installation where another thread could re-import blocked modules in multi-threaded environments.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.6 (Low)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 14:42 UTC
CWE
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Vendor Product Version
jahlives openssl_encrypt Affected: 0 , < 1.4.0 (semver)
Unaffected: 1.4.0 (semver)
Create a notification for this product.
Date Public
2026-02-10 00:00
Show details on NVD website
To clipboard 

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CVE-2026-62948 (GCVE-0-2026-62948)

Vulnerability from cvelistv5 – Published: 2026-07-15 17:50 – Updated: 2026-07-15 18:08
VLAI
Title
OpenWrt odhcpd/LuCI: unauthenticated DHCPv6 client can inject lease-file lines via FQDN hostname → stored XSS in the LuCI admin UI
Summary
OpenWrt is a Linux operating system targeting embedded devices. Prior to 25.12.5, odhcpd writes a DHCPv6 client FQDN option 39 hostname into /tmp/odhcpd.leases through src/statefiles.c statefiles_write_state6() and statefiles_write_state4() without escaping, allowing newline injection of forged lease lines that LuCI rpcd-mod-luci getDHCPLeases displays through htdocs/luci-static/resources/view/status/include/40_dhcp.js and htdocs/luci-static/resources/luci.js dom.append as live HTML in the Active DHCPv6 Leases admin page. This vulnerability is fixed in 25.12.5.
Severity
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 18:08 UTC
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-117 - Improper Output Neutralization for Logs
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version
openwrt openwrt Affected: < 25.12.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-54511 (GCVE-0-2026-54511)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:27 – Updated: 2026-08-27 14:33
VLAI
Title
@logtape/syslog: syslog log injection via unescaped control characters and unvalidated SD-NAME keys
Summary
LogTape is an unobtrusive logging library. Prior to 1.3.11, 2.0.14, and 2.1.5, the @logtape/syslog package's escapeStructuredDataValue() function in packages/syslog/src/syslog.ts does not neutralize C0 control characters from U+0000 through U+001F in structured data values, and formatStructuredData() inserts property keys without validating the RFC 5424 SD-NAME grammar. When includeStructuredData is true, an attacker-controlled newline can terminate an RFC 6587 non-transparent TCP syslog frame and make following bytes appear as a forged RFC 5424 record, while a key containing a closing bracket or other forbidden character can terminate or corrupt the structured-data element. Applications that forward attacker-controlled property values or keys can therefore allow forged records with arbitrary hosts, applications, process identifiers, facilities, or severity levels, undermining downstream collector and SIEM integrity. This issue is fixed in versions 1.3.11, 2.0.14, and 2.1.5.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:55 UTC
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Vendor Product Version
dahlia logtape Affected: < 1.3.11
Affected: >= 2.0.0, < 2.0.14
Affected: >= 2.1.0, < 2.1.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-48083 (GCVE-0-2026-48083)

Vulnerability from cvelistv5 – Published: 2026-08-06 21:16 – Updated: 2026-08-08 02:42
VLAI
Title
OpenReception: Unauthenticated POST /api/log accepts arbitrary content with CRLF injection and no size or rate limits
Summary
OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.2, the `/api/log` endpoint accepts unauthenticated POST requests, applies no schema validation to the message body, writes attacker-controlled content directly into the application's stdout log, interprets newline characters as real line breaks, and enforces no size or rate limits. Three independent abuse modes follow: log injection (forge log lines that look like legitimate system events), log volume DoS (saturate the logging pipeline at sustained 100+ requests per second of small messages), and oversized-payload submission (100 KB payloads accepted; larger sizes not tested). The most operationally damaging mode is log injection. An attacker can inject lines that an operator scanning logs would mistake for real system errors, mask their own activity behind fake noise, or pollute SIEM alerting rules with crafted false positives. A line such as `[error]: injected admin error` injected from an unauthenticated source is indistinguishable from the application's own error output once written to disk. Version 1.0.2 fixes the issue.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 02:41 UTC
CWE
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-45679 (GCVE-0-2026-45679)

Vulnerability from cvelistv5 – Published: 2026-06-02 15:24 – Updated: 2026-06-02 16:42
VLAI
Title
OpenTelemetry eBPF Instrumentation: Redis error text is exported in span status messages
Summary
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, OBI exports raw Redis error text as the span status message. Because Redis error replies can contain attacker-controlled or sensitive values, this behavior can exfiltrate tokens, PII, or other confidential input into telemetry backends and inject untrusted text into downstream analysis systems. This issue has been patched in version 0.9.0.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 16:35 UTC
CWE
  • CWE-117 - Improper Output Neutralization for Logs
  • CWE-532 - Insertion of Sensitive Information into Log File
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-45565 (GCVE-0-2026-45565)

Vulnerability from cvelistv5 – Published: 2026-06-10 15:34 – Updated: 2026-06-10 18:47
VLAI
Title
Roxy-WI: EscapedString validator skips its '..' block when stripping (root cause for several path-traversal/RCE vectors)
Summary
Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, EscapedString (app/modules/roxywi/class_models.py:16-30) is the centralised Pydantic validator used on dozens of fields including SSH credential name, username, description, etc. Its if/elif/elif/else flow returns the metacharacter-stripped value without also enforcing the .. block. An attacker who appends a single ;, &, |, $, or backtick to a .. payload routes the value through the strip arm, where .. survives unblocked and the result is not shlex.quote()'d either. At time of publication, there are no publicly available patches.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 18:47 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Vendor Product Version
roxy-wi roxy-wi Affected: <= 8.2.6.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-44256 (GCVE-0-2026-44256)

Vulnerability from cvelistv5 – Published: 2026-08-19 16:21 – Updated: 2026-08-19 18:18
VLAI
Title
Wazuh: CRLF Log Injection via Unsanitized Basic-Auth Username
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.4.0 until 4.14.6 and 5.0.0-beta2, api/api/middlewares.py decodes the Basic authentication username before credential validation and passes it to the access logger without neutralizing control characters. api/api/alogging.py interpolates that value into the plain-text API log. An unauthenticated attacker can include carriage returns or line feeds in the username to forge entries, obscure activity, or poison systems that consume the plain-text audit log. The JSON log format is not affected because JSON serialization escapes these characters. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 18:17 UTC
CWE
  • CWE-117 - Improper Output Neutralization for Logs
Assigner
References
Impacted products
Vendor Product Version
wazuh wazuh Affected: >= 4.4.0, < 4.14.6
Affected: >= 5.0.0-beta1, < 5.0.0-beta2
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation MIT-30
Implementation

Strategy: Output Encoding

Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.

Mitigation MIT-20
Implementation

Strategy: Input Validation

Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

CAPEC-268: Audit Log Manipulation

The attacker injects, manipulates, deletes, or forges malicious log entries into the log file, in an attempt to mislead an audit of the log file or cover tracks of an attack. Due to either insufficient access controls of the log files or the logging mechanism, the attacker is able to perform such actions.

CAPEC-81: Web Server Logs Tampering

Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.

CAPEC-93: Log Injection-Tampering-Forging

This attack targets the log files of the target host. The attacker injects, manipulates or forges malicious log entries in the log file, allowing them to mislead a log audit, cover traces of attack, or perform other malicious actions. The target host is not properly controlling log access. As a result tainted data is resulting in the log files leading to a failure in accountability, non-repudiation and incident forensics capability.

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