CVE-2021-22925
curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=con
CVSS
5.3
Medio
EPSS
5.4%
p93
KEV
—
Exploit Today
28
0-100
Publicado: 5 ago 2021 · Última mod.: 14 oct 2026 · CWE-200 · CWE-908
5.4%EPSS · 30 días5.4%
2026-10-152026-11-11
curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.
- seclists.orghttp://seclists.org/fulldisclosure/2021/Sep/39
- seclists.orghttp://seclists.org/fulldisclosure/2021/Sep/40
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- hackerone.comhttps://hackerone.com/reports/1223882
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
- security.gentoo.orghttps://security.gentoo.org/glsa/202212-01
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20210902-0003/
- support.apple.comhttps://support.apple.com/kb/HT212804
- support.apple.comhttps://support.apple.com/kb/HT212805
- www.oracle.comhttps://www.oracle.com/security-alerts/cpujan2022.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.html
- seclists.orghttp://seclists.org/fulldisclosure/2021/Sep/39
- seclists.orghttp://seclists.org/fulldisclosure/2021/Sep/40
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
- hackerone.comhttps://hackerone.com/reports/1223882
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
- security.gentoo.orghttps://security.gentoo.org/glsa/202212-01
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20210902-0003/
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-120468——
———Joomla Extension - acymailing.com - Unauthenticated disclosure of mailing list metadata in AcyMailing 1.0.0 - 11.1.1 - An unauthenticated attacker can retrieve every mailing list of the site, including lists that are not publicly visible and lists restricted to an access level, together with their descriptions, access levels, owning user account and subscriber counts. The WordPress plugin is not affected.6hCVE-2026-118495——
———Joomla / WordPress Extension - acymailing.com - Exposure of sensitive information to an unauthorized actor in AcyMailing 6.0.0 - 11.1.1 - Exposure of sensitive information to an unauthorized actor in AcyMailing 6.0.0 through 11.1.1. An unauthenticated attacker who knows a subscriber's email address can read that subscriber's record, including the per-subscriber secret key that authorises the subscription management links. Holding that key, the attacker can act as that subscriber on those endpoints, which includes triggering the GDPR data export and the GDPR account deletion where those options are enabled.6hCVE-2026-198093.3 BAJ—
———The user-mode system call verifier z_vrfy_charger_get_prop() in drivers/charger/charger_handlers.c declares an uninitialized union charger_propval k_val on the kernel (privileged) stack, passes it to the charger driver back end via z_impl_charger_get_prop(), and then copies the full sizeof(union charger_propval) back into the calling user thread's buffer with k_usermode_to_copy(). That discloses kernel stack contents on two paths:
On error. The copy-out ignores the driver's return code. In-tree back ends return an error without writing through the value pointer for properties they do not implement: charger_gpio_get_prop() returns -ENOTSUP unconditionally, and bq24190_get_prop() has a default: return -ENOTSUP; arm that never touches val. The whole union is then stack residue.
On success. A back end writes only the one union member the requested property selects (for example sbs_charger.c writes the one-byte val->present for CHARGER_PROP_PRESENT and returns 0), yet the handler still copies the whole union, so every byte beyond that member is uninitialized.
The handler is compiled only when CONFIG_USERSPACE=y and is reachable by any user-mode thread that has been granted access to a charger device object. K_SYSCALL_DRIVER_CHARGER() validates only the device object and its API pointer, not the property identifier, so an unprivileged thread can choose prop freely: an unimplemented property forces the error path, a narrow one the success path, and the call can be repeated at will.
Each call discloses up to the size of the union (12 bytes on a 32-bit target, 16 bytes on 64-bit targets where the function-pointer members widen it) of supervisor-stack memory. The bytes are residue of earlier kernel-side frames on the thread's privileged stack and can contain kernel object addresses and saved return addresses, which an unprivileged thread cannot otherwise observe and which help defeat address-layout assumptions when exploiting a separate memory-safety defect. There is no integrity or availability impact.
Two commits fix it, and both are needed. 5054384e983c skips the copy-out when the back end reports an error. c31cac727d02 zeroes the union before the driver call, so the bytes copied out on success are driver-written data or zeros. A tree carrying only the first still leaks on every successful call.8hCVE-2026-127046——
——0The MISP Modules website component contains an information disclosure vulnerability in the external tools management interface. The /external_tools/list endpoint returned stored API keys (the api_key field) in its JSON response via the ExternalTools model serializer. Additionally, the browser-based edit form pre-populated the API key input field with the stored credential value, exposing it in the DOM.
The /external_tools/list endpoint is accessible without authentication (the regression tests verify the response for both authenticated and unauthenticated clients), meaning any network-reachable client could retrieve the API keys for all configured external tools. These keys are used by the server to authenticate submissions to external analysis or enrichment services, so their disclosure allows an attacker to impersonate the MISP instance or directly access those external services.
The vulnerability also affected the edit workflow: the change_config endpoint previously required the API key to be present and non-empty on every save, forcing the key to round-trip through the client. The browser JavaScript stored the key in a reactive state object and updated the in-memory tool list with the credential value, further increasing the window of exposure in client-side memory and network traffic.
Affected component: the website sub-application of MISP Modules, specifically the external_tools module (serializer in models.py, list endpoint, and the external_tools_index.html template). The impact is limited to confidentiality of the stored API keys; no integrity or availability impact on the MISP Modules website itself is indicated by the patch.12hCVE-2026-1246536.5 MED—
——0The Mine CloudVod WordPress plugin before 2.6.6 does not restrict who can request cloud storage upload credentials from several of its REST API routes, allowing unauthenticated attackers to obtain signed upload policies and temporary credentials for the site's configured Alibaba Cloud OSS, Tencent Cloud COS and Dogecloud accounts and use them to upload or overwrite files in the site's storage.12hCVE-2026-1269575.3 MED—
——0An integer underflow in Zephyr's IPv4 option handling allows a remote, unauthenticated attacker to read stack memory. When replying to an ICMP Echo Request that carries an IPv4 Record Route or Timestamp option, icmpv4_update_record_route() and icmpv4_update_time_stamp() in subsys/net/ip/icmpv4.c compute the length of the already recorded data as ptr - ptr_offset in uint8_t arithmetic. The attacker-controlled Pointer field is checked against the option length but not against the RFC 791 minimum (4 for Record Route, 5 for Timestamp), so a smaller value wraps the length to up to 252 bytes. net_pkt_write() then reads past the 40-byte opt_data stack buffer and up to 213 bytes of stack memory, which can include stack and heap pointers, are returned in the ICMP Echo Reply. A single packet triggers the leak and the device does not crash, so it can be repeated. Devices built with CONFIG_NET_IPV4_HDR_OPTIONS, which CONFIG_NET_IPV4_IGMP selects, are affected.21h