Common Weakness Enumeration
CWE-644
AllowedImproper Neutralization of HTTP Headers for Scripting Syntax
Abstraction: Variant · Status: Incomplete
The product does not neutralize or incorrectly neutralizes web scripting syntax in HTTP headers that can be used by web browser components that can process raw headers, such as Flash.
116 vulnerabilities reference this CWE, most recent first.
CVE-2026-26234 (GCVE-0-2026-26234)
Vulnerability from cvelistv5 – Published: 2026-02-12 02:31 – Updated: 2026-03-05 01:31
VLAI
EPSS
VEX
Title
JUNG Smart Visu Server - Improper Neutralization of HTTP Headers for Scripting Syntax
Summary
JUNG Smart Visu Server 1.1.1050 contains a request header manipulation vulnerability that allows unauthenticated attackers to override request URLs by injecting arbitrary values in the X-Forwarded-Host header. Attackers can manipulate proxied requests to generate tainted responses, enabling cache poisoning, potential phishing, and redirecting users to malicious domains.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-12 15:31 UTC
CWE
- CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zeroscience.mk/en/vulnerabilities/ZSL… | third-party-advisory |
| https://www.vulncheck.com/advisories/jung-smart-v… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ALBRECHT JUNG GMBH & CO. KG | JUNG Smart Visu Server |
Affected:
1.1.1050
Affected: 1.0.905 Affected: 1.0.832 Affected: 1.0.830 cpe:2.3:o:jung-group:smart_visu_server_firmware:1.1.1050:*:*:*:*:*:*:* |
Date Public
2026-02-12 00:00
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CVE-2026-21762 (GCVE-0-2026-21762)
Vulnerability from cvelistv5 – Published: 2026-07-17 17:10 – Updated: 2026-07-17 17:53
VLAI
EPSS
VEX
Title
Missing HTTP Security Headers in DevOps Loop
Summary
HCL DevOps Loop is affected by missing HTTP security headers. Missing security headers may reduce browser protections against common web-based attacks such as clickjacking, MIME-type sniffing, and cross-site scripting.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 17:53 UTC
CWE
- CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.hcl-software.com/csm?id=kb_articl… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HCLSoftware | DevOps Loop |
Affected:
2.0.0
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CVE-2026-10836 (GCVE-0-2026-10836)
Vulnerability from cvelistv5 – Published: 2026-06-17 11:10 – Updated: 2026-06-17 14:58
VLAI
EPSS
VEX
Title
Improper neutralization of HTTP headers in Password Manager
Summary
Improper handling of HTTP headers that allows a remote attacker to manipulate the value of the Host header using specially crafted requests. A successful exploit could result in the generation of manipulated links or responses, potentially leading to limited information disclosure or compromising the integrity of dependent services.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 14:58 UTC
CWE
- CWE-644 - Improper neutralization of HTTP headers for scripting syntax
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.incibe.es/en/incibe-cert/notices/avis… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Password Manager | Password Manager |
Affected:
0 , < 08/07/2025
(date)
Unaffected: 08/07/2025 (date) cpe:2.3:a:password_manager:password_manager:*:*:*:*:*:*:*:* |
Date Public
2026-06-17 10:00
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CVE-2026-4096 (GCVE-0-2026-4096)
Vulnerability from cvelistv5 – Published: 2026-06-11 14:44 – Updated: 2026-06-11 16:52
VLAI
EPSS
VEX
Title
A vulnerability has been identified in IBM DevOps Plan that allows a Host Header Injection attack due to improper handling of the Host header in HTTP requests.
Summary
IBM DevOps Plan 3.0.0 through 3.0.6 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-11 16:21 UTC
CWE
- CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7275005 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | DevOps Plan |
Affected:
3.0.0 , ≤ 3.0.6
(semver)
cpe:2.3:a:ibm:devops_plan:3.0.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:devops_plan:3.0.6:*:*:*:*:*:*:* |
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CVE-2026-1698 (GCVE-0-2026-1698)
Vulnerability from cvelistv5 – Published: 2026-02-26 07:58 – Updated: 2026-03-26 08:25
VLAI
EPSS
VEX
Title
HTTP Host header vulnerability in WebClient and WebScheduler web apps
Summary
A HTTP Host header attack vulnerability affects WebClient and the WebScheduler web apps of PcVue in version 15.0.0 through 16.3.3 included, allowing a remote attacker to inject harmful payloads that manipulate server-side behavior.
This vulnerability only affects the endpoints /Authentication/ExternalLogin, /Authentication/AuthorizationCodeCallback and /Authentication/Logout
of the WebClient and WebScheduler web apps.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CNA · arcinfo (v2.0.3)
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 14:30 UTC
CWE
- CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.pcvue.com/security/#SB2026-2 | vendor-advisory |
Impacted products
Date Public
2026-02-25 23:00
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CVE-2026-0516 (GCVE-0-2026-0516)
Vulnerability from cvelistv5 – Published: 2026-08-05 11:50 – Updated: 2026-08-05 19:57
VLAI
EPSS
VEX
Summary
A improper neutralization of HTTP Headers for Scripting Syntax vulnerability in SonicOS could allow a remote attacker to manipulate the Host header and redirect firewall management users to arbitrary web domains.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 19:30 UTC
CWE
- CWE-644 - Improper neutralization of HTTP headers for scripting syntax
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.global.sonicwall.com/vuln-detail/SN… | vendor-advisory |
Impacted products
Date Public
2026-08-05 11:46
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CVE-2025-67724 (GCVE-0-2025-67724)
Vulnerability from cvelistv5 – Published: 2025-12-12 05:36 – Updated: 2025-12-18 18:53
VLAI
EPSS
VEX
Title
Tornado vulnerable to Header Injection and XSS via reason argument
Summary
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 18:53 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/tornadoweb/tornado/security/ad… | x_refsource_CONFIRM |
| https://github.com/tornadoweb/tornado/commit/9c16… | x_refsource_MISC |
| https://github.com/tornadoweb/tornado/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tornadoweb | tornado |
Affected:
< 6.5.3
|
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CVE-2025-66485 (GCVE-0-2025-66485)
Vulnerability from cvelistv5 – Published: 2026-04-01 23:01 – Updated: 2026-04-02 18:10
VLAI
EPSS
VEX
Title
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Summary
IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 18:10 UTC
CWE
- CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7267848 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | Aspera Shares |
Affected:
1.9.9 , ≤ 1.11.0
(semver)
cpe:2.3:a:ibm:aspera_shares:1.9.9:*:*:*:*:*:*:* cpe:2.3:a:ibm:aspera_shares:1.11.0:*:*:*:*:*:*:* |
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CVE-2025-64484 (GCVE-0-2025-64484)
Vulnerability from cvelistv5 – Published: 2025-11-10 21:33 – Updated: 2025-11-14 19:24
VLAI
EPSS
VEX
Title
OAuth2-Proxy vulnerable to header smuggling via underscore, leading to potential privilege escalation
Summary
OAuth2-Proxy is an open-source tool that can act as either a standalone reverse proxy or a middleware component integrated into existing reverse proxy or load balancer setups. In versions prior to 7.13.0, all deployments of OAuth2 Proxy in front of applications that normalize underscores to dashes in HTTP headers (e.g., WSGI-based frameworks such as Django, Flask, FastAPI, and PHP applications). Authenticated users can inject underscore variants of X-Forwarded-* headers that bypass the proxy’s filtering logic, potentially escalating privileges in the upstream app. OAuth2 Proxy authentication/authorization itself is not compromised. The problem has been patched with v7.13.0. By default all specified headers will now be normalized, meaning that both capitalization and the use of underscores (_) versus dashes (-) will be ignored when matching headers to be stripped. For example, both `X-Forwarded-For` and `X_Forwarded-for` will now be treated as equivalent and stripped away. For those who have a rational that requires keeping a similar looking header and not stripping it, the maintainers introduced a new configuration field for Headers managed through the AlphaConfig called `InsecureSkipHeaderNormalization`. As a workaround, ensure filtering and processing logic in upstream services don't treat underscores and hyphens in Headers the same way.
Severity
8.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-14 19:24 UTC
CWE
- CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/oauth2-proxy/oauth2-proxy/secu… | x_refsource_CONFIRM |
| https://datatracker.ietf.org/doc/html/rfc2616#sec… | x_refsource_MISC |
| https://datatracker.ietf.org/doc/html/rfc822#sect… | x_refsource_MISC |
| https://github.security.telekom.com/2020/05/smugg… | x_refsource_MISC |
| https://www.uptimia.com/questions/why-are-http-he… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| oauth2-proxy | oauth2-proxy |
Affected:
< 7.13.0
|
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CVE-2025-64425 (GCVE-0-2025-64425)
Vulnerability from cvelistv5 – Published: 2026-01-05 20:49 – Updated: 2026-01-05 21:48
VLAI
EPSS
VEX
Title
Coolify has host header injection in forgot password
Summary
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. In Coolify versions up to and including v4.0.0-beta.434, an attacker can initiate a password reset for a victim, and modify the host header of the request to a malicious value. The victim will receive a password reset email, with a link to the malicious host. If the victim clicks this link, their reset token is sent to the attacker's server, allowing the attacker to use it to change the victim's password and takeover their account. As of time of publication, it is unclear if a patch is available.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-05 21:07 UTC
CWE
- CWE-644 - Improper Neutralization of HTTP Headers for Scripting Syntax
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/coollabsio/coolify/security/ad… | x_refsource_CONFIRM |
| https://drive.google.com/file/d/1I5sJHcpetJbKlwVS… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| coollabsio | coolify |
Affected:
<= 4.0.0-beta.434
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Mitigation
Architecture and Design
Perform output validation in order to filter/escape/encode unsafe data that is being passed from the server in an HTTP response header.
Mitigation
Architecture and Design
Disable script execution functionality in the clients' browser.
No CAPEC attack patterns related to this CWE.