Common Weakness Enumeration
CWE-117
AllowedImproper Output Neutralization for Logs
Abstraction: Base · Status: Draft
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.
201 vulnerabilities reference this CWE, most recent first.
CVE-2026-74885 (GCVE-0-2026-74885)
Vulnerability from cvelistv5 – Published: 2026-08-17 11:04 – Updated: 2026-08-17 14:42
VLAI
EPSS
VEX
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
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
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.0
(semver)
Unaffected: 1.4.0 (semver) |
Date Public
2026-02-10 00:00
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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
EPSS
VEX
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)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 18:08 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/openwrt/openwrt/security/advis… | x_refsource_CONFIRM |
| https://github.com/openwrt/odhcpd/pull/404 | x_refsource_MISC |
| https://github.com/openwrt/luci/commit/55379d04fc… | x_refsource_MISC |
| https://github.com/openwrt/odhcpd/commit/68f38269… | x_refsource_MISC |
| https://github.com/openwrt/openwrt/releases/tag/v… | x_refsource_MISC |
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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
EPSS
VEX
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)
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
2 references
| URL | Tags |
|---|---|
| https://github.com/open-reception/appointment-boo… | x_refsource_CONFIRM |
| https://github.com/open-reception/appointment-boo… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-reception | appointment-booking-software |
Affected:
< 1.0.2
|
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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
EPSS
VEX
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)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 16:35 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-e… | x_refsource_CONFIRM |
| https://github.com/open-telemetry/opentelemetry-e… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-ebpf-instrumentation |
Affected:
< 0.9.0
|
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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
EPSS
VEX
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)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 18:47 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/roxy-wi/roxy-wi/security/advis… | x_refsource_CONFIRM |
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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
EPSS
VEX
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)
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
5 references
| URL | Tags |
|---|---|
| https://github.com/wazuh/wazuh/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/wazuh/wazuh/pull/35866 | x_refsource_MISC |
| https://github.com/wazuh/wazuh/commit/cddf3fd16b0… | x_refsource_MISC |
| https://github.com/wazuh/wazuh/releases/tag/v4.14.6 | x_refsource_MISC |
| https://github.com/wazuh/wazuh/releases/tag/v5.0.… | x_refsource_MISC |
Impacted products
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CVE-2026-34478 (GCVE-0-2026-34478)
Vulnerability from cvelistv5 – Published: 2026-04-10 15:40 – Updated: 2026-04-10 17:50
VLAI
EPSS
VEX
Title
Apache Log4j Core: Log injection in Rfc5424Layout due to silent configuration incompatibility
Summary
Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout , in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CRLF sequences due to undocumented renames of security-relevant configuration attributes.
Two distinct issues affect users of stream-based syslog services who configure Rfc5424Layout directly:
* The newLineEscape attribute was silently renamed, causing newline escaping to stop working for users of TCP framing (RFC 6587), exposing them to CRLF injection in log output.
* The useTlsMessageFormat attribute was silently renamed, causing users of TLS framing (RFC 5425) to be silently downgraded to unframed TCP (RFC 6587), without newline escaping.
Users of the SyslogAppender are not affected, as its configuration attributes were not modified.
Users are advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-10 17:48 UTC
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/apache/logging-log4j2/pull/4074 | patch |
| https://logging.apache.org/security.html#CVE-2026-34478 | vendor-advisory |
| https://logging.apache.org/cyclonedx/vdr.xml | vendor-advisory |
| https://logging.apache.org/log4j/2.x/manual/layou… | related |
| https://lists.apache.org/thread/3k1clr2l6vkdnl4cb… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/04/10/7 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Log4j Core |
Affected:
2.21.0 , < 2.25.4
(maven)
Affected: 3.0.0-beta1 , ≤ 3.0.0-beta3 (maven) cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* |
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CVE-2026-25548 (GCVE-0-2026-25548)
Vulnerability from cvelistv5 – Published: 2026-02-18 22:49 – Updated: 2026-02-19 17:46
VLAI
EPSS
VEX
Title
InvoicePlane Vulnerable to Remote Code Execution via Local File Inclusion and Log Poisoning
Summary
InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. A critical Remote Code Execution (RCE) vulnerability exists in InvoicePlane 1.7.0 through a chained Local File Inclusion (LFI) and Log Poisoning attack. An authenticated administrator can execute arbitrary system commands on the server by manipulating the `public_invoice_template` setting to include poisoned log files containing PHP code. Version 1.7.1 patches the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-19 17:07 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/InvoicePlane/InvoicePlane/secu… | x_refsource_CONFIRM |
| https://github.com/InvoicePlane/InvoicePlane/comm… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InvoicePlane | InvoicePlane |
Affected:
<= 1.7.0
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CVE-2026-20260 (GCVE-0-2026-20260)
Vulnerability from cvelistv5 – Published: 2026-06-10 17:16 – Updated: 2026-06-10 18:23
VLAI
EPSS
VEX
Title
Log Injection through HTTP Request Paths in Splunk SOAR
Summary
In Splunk SOAR (Security Orchestration, Automation, and Response) versions below 8.5.0, an unauthenticated attacker could inject American National Standards Institute (ANSI) escape codes into SOAR application log files through specially crafted HTTP request paths, which a terminal emulator might interpret when an administrator views the logs.<br><br>The injection is possible because SOAR does not strip control characters from HTTP request paths before writing them to application logs.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 18:23 UTC
CWE
- CWE-117 - The software does not neutralize or incorrectly neutralizes output that is written to logs.
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Splunk | Splunk SOAR |
Affected:
8.5 , < 8.5.0
(custom)
|
Date Public
2026-06-10 00:00
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CVE-2026-18148 (GCVE-0-2026-18148)
Vulnerability from cvelistv5 – Published: 2026-08-12 19:40 – Updated: 2026-08-13 14:20
VLAI
EPSS
VEX
Title
IBM i is Affected By Multiple Vulnerabilities in Navigator for i
Summary
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to inject arbitrary content into Navigator log files due to improper output neutralization for logs.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 14:20 UTC
CWE
- CWE-117 - Improper Output Neutralization for Logs
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7283292 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | i |
Affected:
7.6
Affected: 7.5 Affected: 7.4 Affected: 7.3 cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:* |
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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.